Clean up MCP Monaco editor (#21643)

Rebuild the MCP setup block on the shared Monaco editor with theme-driven colors, padding, and auto-height; add the settings description line-height token; revert the clipboard util to the shared navigator.clipboard implementation; and consolidate the code editor's auto-height to a single disposed, reactive effect.

packages/twenty-front/src/modules/workflow/workflow-steps/workflow-actions/code-action/components/WorkflowEditActionCode.tsx

@@ -358,7 +358,6 @@ export const WorkflowEditActionCode = ({
             readOnly: actionOptions.readonly,
             domReadOnly: actionOptions.readonly,
             scrollBeyondLastLine: false,
-            padding: { top: 4, bottom: 4 },
           }}
         />
       </StyledFullScreenCodeEditorContainer>
@@ -397,7 +396,6 @@ export const WorkflowEditActionCode = ({
                   readOnly: actionOptions.readonly,
                   domReadOnly: actionOptions.readonly,
                   scrollBeyondLastLine: false,
-                  padding: { top: 4, bottom: 4 },
                   lineNumbersMinChars: 2,
                   fixedOverflowWidgets: true,
                 }}