Refactor default value for select (#5343)

In this PR, we are refactoring two things:
- leverage field.defaultValue for Select and MultiSelect settings form
(instead of option.isDefault)
- use quoted string (ex: "'USD'") for string default values to embrace
backend format

---------

Co-authored-by: Thaïs Guigon <guigon.thais@gmail.com>

packages/twenty-front/src/utils/validation-schemas/simpleQuotesStringSchema.ts

@@ -0,0 +1,15 @@
+import { z } from 'zod';
+
+export const simpleQuotesStringSchema: z.ZodType<
+  `'${string}'`,
+  z.ZodTypeDef,
+  string
+> = z
+  .string()
+  .refine(
+    (value: string): value is `'${string}'` =>
+      value.startsWith("'") && value.endsWith("'"),
+    {
+      message: 'String should be wrapped in simple quotes',
+    },
+  );