feat: added workspace member filter for actor fields (#16628)

Closes #16619

This PR adds support for filtering ACTOR fields by `Workspace Member`
subfield, enabling users to filter records by who created them with a
`Me` option.

I replicated the same UX and code structure as the Relation field filter
for consistency.

Each filter selection triggers a server-side GraphQL call. But there is
client-side filtering in `isRecordMatchingFilter.ts` which instantly
filters already-loaded records while the server is fetching new results.
I replicated this behaviour from how `FULL_NAME` and other composite
fields handle filtering.


UX decision that were taken by me (Let me know if changes are needed) : 
- The filter shows comma separated selected workspace member names until
3 members are selected. After that it shows [no of selected members]
workspace members.

<img width="643" height="283" alt="Screenshot 2025-12-17 at 8 01 23 PM"
src="https://github.com/user-attachments/assets/18d524f4-979b-4d92-ad64-aa7b63be7897"
/>
<img width="774" height="309" alt="Screenshot 2025-12-17 at 8 01 33 PM"
src="https://github.com/user-attachments/assets/779f374f-1501-48f9-afa2-a78628e067b1"
/>
<img width="737" height="397" alt="Screenshot 2025-12-17 at 8 01 40 PM"
src="https://github.com/user-attachments/assets/4e8b963e-8a0f-467d-91ae-48bca4e1d842"
/>
<img width="697" height="334" alt="Screenshot 2025-12-17 at 8 01 53 PM"
src="https://github.com/user-attachments/assets/c9a0e4bb-48b4-486b-a4f9-d7c49ff3852c"
/>
<img width="684" height="343" alt="Screenshot 2025-12-17 at 8 02 04 PM"
src="https://github.com/user-attachments/assets/d5c45eba-06a3-40fc-b9d0-d585dc8bc136"
/>

---------

Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-front/src/modules/workflow/workflow-steps/filters/components/WorkflowStepFilterValueCompositeInput.tsx

@@ -1,8 +1,13 @@
+import { CoreObjectNameSingular } from '@/object-metadata/types/CoreObjectNameSingular';
 import { FormCountryMultiSelectInput } from '@/object-record/record-field/ui/form-types/components/FormCountryMultiSelectInput';
 import { FormMultiSelectFieldInput } from '@/object-record/record-field/ui/form-types/components/FormMultiSelectFieldInput';
 import { FormNumberFieldInput } from '@/object-record/record-field/ui/form-types/components/FormNumberFieldInput';
-import { FormSingleRecordPicker } from '@/object-record/record-field/ui/form-types/components/FormSingleRecordPicker';
+import { FormRelationToOneFieldInput } from '@/object-record/record-field/ui/form-types/components/FormRelationToOneFieldInput';
 import { FormTextFieldInput } from '@/object-record/record-field/ui/form-types/components/FormTextFieldInput';
+import {
+  type FieldRelationToOneValue,
+  type FieldRelationValue,
+} from '@/object-record/record-field/ui/types/FieldMetadata';
 import { CURRENCIES } from '@/settings/data-model/constants/Currencies';
 import { WorkflowStepFilterContext } from '@/workflow/workflow-steps/filters/states/context/WorkflowStepFilterContext';
 import { WorkflowVariablePicker } from '@/workflow/workflow-variables/components/WorkflowVariablePicker';
@@ -21,9 +26,11 @@ const ACTOR_SOURCE_OPTIONS: SelectOption[] = Object.values(
 export const WorkflowStepFilterValueCompositeInput = ({
   stepFilter,
   onChange,
+  onClear,
 }: {
   stepFilter: StepFilter;
   onChange: (newValue: JsonValue) => void;
+  onClear: () => void;
 }) => {
   const { readonly } = useContext(WorkflowStepFilterContext);
   const { type: filterType, compositeFieldSubFieldName: subFieldName } =
@@ -90,12 +97,17 @@ export const WorkflowStepFilterValueCompositeInput = ({
             VariablePicker={WorkflowVariablePicker}
           />
         ) : subFieldName === 'workspaceMemberId' ? (
-          <FormSingleRecordPicker
-            objectNameSingulars={['workspaceMember']}
-            defaultValue={stepFilter.value}
+          <FormRelationToOneFieldInput
+            objectNameSingular={CoreObjectNameSingular.WorkspaceMember}
+            defaultValue={
+              stepFilter.value as
+                | FieldRelationValue<FieldRelationToOneValue>
+                | string
+            }
             onChange={onChange}
-            disabled={readonly}
+            onClear={onClear}
             VariablePicker={WorkflowVariablePicker}
+            readonly={readonly}
           />
         ) : (
           <FormTextFieldInput

packages/twenty-front/src/modules/workflow/workflow-steps/filters/components/WorkflowStepFilterValueInput.tsx

@@ -93,6 +93,15 @@ export const WorkflowStepFilterValueInput = ({
     });
   };
 
+  const handleClearValue = () => {
+    upsertStepFilterSettings({
+      stepFilterToUpsert: {
+        ...stepFilter,
+        value: '',
+      },
+    });
+  };
+
   const handleRelativeDateFilterChange = (
     newRelativeDateFilter: RelativeDateFilter,
   ) => {
@@ -182,6 +191,7 @@ export const WorkflowStepFilterValueInput = ({
       <WorkflowStepFilterValueCompositeInput
         stepFilter={stepFilter}
         onChange={handleValueChange}
+        onClear={handleClearValue}
       />
     );
   }
@@ -269,6 +279,7 @@ export const WorkflowStepFilterValueInput = ({
       field={field}
       defaultValue={stepFilter.value}
       onChange={handleValueChange}
+      onClear={handleClearValue}
       readonly={readonly}
       VariablePicker={WorkflowVariablePicker}
       placeholder={t`Enter value`}