Removed availableFilterDefinitions as a state but kept its usage as a derived state of objectMetadataItems (#9972)

The global record filter refactor will derive everything at runtime from
objectMetadataItemsState, thus removing the need for a filter definition
concept.

Here we don't yet remove available filter definition usage but we
replace the available filter definitions states, we now derive the same
value from objectMetadataItemsState.

This will allow us to progressively remove the usage of the concept of
filter definition, at the end it will then be easy to just remove from
the codebase because nothing will use it anymore.

packages/twenty-front/src/modules/workspace/utils/checkIfFeatureFlagIsEnabledOnWorkspace.ts

@@ -0,0 +1,22 @@
+import { CurrentWorkspace } from '@/auth/states/currentWorkspaceState';
+import { isDefined } from 'twenty-shared';
+import { FeatureFlagKey } from '~/generated-metadata/graphql';
+
+export const checkIfFeatureFlagIsEnabledOnWorkspace = (
+  featureKey: FeatureFlagKey | null | undefined,
+  workspace: CurrentWorkspace | null | undefined,
+) => {
+  if (
+    !isDefined(featureKey) ||
+    !isDefined(workspace) ||
+    !isDefined(workspace.featureFlags)
+  ) {
+    return false;
+  }
+
+  const featureFlag = workspace.featureFlags.find(
+    (flag) => flag.key === featureKey,
+  );
+
+  return featureFlag?.value === true;
+};