refactor(server): remove nestjs-query from key-value-pair module (#22575)

## Summary

First step toward removing `@ptc-org/nestjs-query` from the codebase
(follow-up to the `indexFieldMetadatas` DI bug
[discussion](https://github.com/twentyhq/twenty/pull/22439#issuecomment-4864265452)).

The `key-value-pair` module wrapped its entity in
`NestjsQueryGraphQLModule.forFeature`, but registered **no resolvers** —
the `KeyValuePair` type is exposed in no GraphQL schema, and
`KeyValuePairService` only uses a plain TypeORM repository. The
nestjs-query layer was doing nothing except registering that repository
as a side effect.

## Changes

- Replace the empty `NestjsQueryGraphQLModule.forFeature({...})` wrapper
with a plain
  `TypeOrmModule.forFeature([KeyValuePairEntity])`
- Swap the entity's `@IDField` (nestjs-query) for the standard `@Field`
from `@nestjs/graphql`

`nestjs-query` is no longer referenced anywhere under `key-value-pair/`.

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packages/twenty-server/src/engine/core-modules/key-value-pair/key-value-pair.entity.ts

@@ -1,6 +1,5 @@
 import { Field, ObjectType } from '@nestjs/graphql';
 
-import { IDField } from '@ptc-org/nestjs-query-graphql';
 import {
   Column,
   CreateDateColumn,
@@ -56,7 +55,7 @@ export enum KeyValuePairType {
   },
 )
 export class KeyValuePairEntity {
-  @IDField(() => UUIDScalarType)
+  @Field(() => UUIDScalarType)
   @PrimaryGeneratedColumn('uuid')
   id: string;
 

packages/twenty-server/src/engine/core-modules/key-value-pair/key-value-pair.module.ts

@@ -1,21 +1,12 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
 
-import { NestjsQueryGraphQLModule } from '@ptc-org/nestjs-query-graphql';
-import { NestjsQueryTypeOrmModule } from '@ptc-org/nestjs-query-typeorm';
-
-import { KeyValuePairService } from 'src/engine/core-modules/key-value-pair/key-value-pair.service';
-import { KeyValuePairEntity } from 'src/engine/core-modules/key-value-pair/key-value-pair.entity';
 import { TypeORMModule } from 'src/database/typeorm/typeorm.module';
+import { KeyValuePairEntity } from 'src/engine/core-modules/key-value-pair/key-value-pair.entity';
+import { KeyValuePairService } from 'src/engine/core-modules/key-value-pair/key-value-pair.service';
 
 @Module({
-  imports: [
-    NestjsQueryGraphQLModule.forFeature({
-      imports: [
-        NestjsQueryTypeOrmModule.forFeature([KeyValuePairEntity]),
-        TypeORMModule,
-      ],
-    }),
-  ],
+  imports: [TypeOrmModule.forFeature([KeyValuePairEntity]), TypeORMModule],
   exports: [KeyValuePairService],
   providers: [KeyValuePairService],
 })