refactor(filters): pass fieldMetadataItems array to dispatcher (#20737)

## Summary

Alternative to #20717. Same goal (clean up the filter dispatcher API
after #20670) but smaller and follows the codebase's "pass data, not
behavior" style.

The dispatcher takes a `fieldMetadataItems: FieldShared[]` array
directly instead of a `findFieldMetadataItemById: (id) => FieldShared |
undefined` callback. The util builds the id lookup internally — once per
call, used for both source-field and relation-target-field lookups. No
new types, no separate hydration step.

## What changes

**`twenty-shared`**
- `computeRecordGqlOperationFilter` /
`turnRecordFilterIntoRecordGqlOperationFilter` /
`turnRecordFilterGroupsIntoGqlOperationFilter`: replace
`findFieldMetadataItemById` param with `fieldMetadataItems` /
`fieldMetadataItemById` (internal Map).
- Remove the exported `FindFieldMetadataItemById` type.
- `turnAnyFieldFilterIntoRecordGqlFilter`: rename its internal
`fieldById` Map for consistency.
- Tests updated to pass arrays.

**Frontend (15 call sites)**
- Switch from `fieldMetadataItemByIdMapSelector` to
`flattenedFieldMetadataItemsSelector`.
- Pass `fieldMetadataItems: flattenedFieldMetadataItems` to the
dispatcher.
- `useFindManyRecordsSelectedInContextStore` keeps the Map selector
because it still does a per-filter lookup for the soft-delete check.

**Server (5 call sites)**
- Pass
`Object.values(flatFieldMetadataMaps.byUniversalIdentifier).filter(isDefined)`.

## Why this over #20717

#20717 moves resolution into a separate hydration step + introduces a
`HydratedRecordFilter` type. The bug that #20717 originally surfaced was
Sentry catching 4 critical runtime errors during review
(`fieldMetadataItemByIdMap` declared but not passed). The added type and
the explicit hydration boundary are extra surface area for not much
benefit — the existing API was a callback wrapping a Map at every call
site, and the natural simplification is to just pass the Map (or its
array) directly.

Net diff: **196 insertions, 203 deletions** (~7 lines net removed). 32
files.

## Test plan
- [x] Shared filter unit tests pass (461 tests)
- [x] Frontend filter/context-store tests pass (13 tests)
- [x] Frontend typecheck passes
- [x] Server typecheck passes
- [x] Lint passes (frontend + server)
- [ ] Integration tests on #20670 still pass — workflow find-records +
chart-data with relation-traversal filter still work end-to-end through
the new array param

packages/twenty-front/src/modules/command-menu-item/engine-command/utils/buildHeadlessCommandContextApi.ts

@@ -9,7 +9,7 @@ import { contextStoreFilterGroupsComponentState } from '@/context-store/states/c
 import { contextStoreFiltersComponentState } from '@/context-store/states/contextStoreFiltersComponentState';
 import { contextStoreTargetedRecordsRuleComponentState } from '@/context-store/states/contextStoreTargetedRecordsRuleComponentState';
 import { computeContextStoreFilters } from '@/context-store/utils/computeContextStoreFilters';
-import { fieldMetadataItemByIdMapSelector } from '@/object-metadata/states/fieldMetadataItemByIdMapSelector';
+import { flattenedFieldMetadataItemsSelector } from '@/object-metadata/states/flattenedFieldMetadataItemsSelector';
 import { objectMetadataItemsSelector } from '@/object-metadata/states/objectMetadataItemsSelector';
 import { type EnrichedObjectMetadataItem } from '@/object-metadata/types/EnrichedObjectMetadataItem';
 import { recordStoreFamilyState } from '@/object-record/record-store/states/recordStoreFamilyState';
@@ -90,8 +90,8 @@ export const buildHeadlessCommandContextApi = ({
       ? (currentWorkspaceMember?.timeZone ?? systemTimeZone)
       : systemTimeZone;
 
-  const fieldMetadataItemByIdMap = store.get(
-    fieldMetadataItemByIdMapSelector.atom,
+  const flattenedFieldMetadataItems = store.get(
+    flattenedFieldMetadataItemsSelector.atom,
   );
 
   const graphqlFilter = isDefined(objectMetadataItem)
@@ -100,7 +100,7 @@ export const buildHeadlessCommandContextApi = ({
         contextStoreFilters: filters,
         contextStoreFilterGroups: filterGroups,
         objectMetadataItem,
-        findFieldMetadataItemById: (id) => fieldMetadataItemByIdMap.get(id),
+        fieldMetadataItems: flattenedFieldMetadataItems,
         filterValueDependencies: {
           currentWorkspaceMemberId: currentWorkspaceMember?.id,
           timeZone: userTimezone,