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/__tests__/simpleQuotesStringSchema.test.ts

@@ -0,0 +1,38 @@
+import { SafeParseError } from 'zod';
+
+import { simpleQuotesStringSchema } from '../simpleQuotesStringSchema';
+
+describe('simpleQuotesStringSchema', () => {
+  it('validates a string with simple quotes', () => {
+    // Given
+    const input = "'with simple quotes'";
+
+    // When
+    const result = simpleQuotesStringSchema.parse(input);
+
+    // Then
+    expect(result).toBe(input);
+  });
+
+  it.each([
+    // Given
+    ['no simple quotes'],
+    ["'only at start"],
+    ["only at end'"],
+    ["mid'dle"],
+    [''],
+  ])('fails for strings not wrapped in simple quotes (%s)', (input) => {
+    // When
+    const result = simpleQuotesStringSchema.safeParse(input);
+
+    // Then
+    expect(result.success).toBe(false);
+    expect((result as SafeParseError<string>).error.errors).toEqual([
+      {
+        code: 'custom',
+        message: 'String should be wrapped in simple quotes',
+        path: [],
+      },
+    ]);
+  });
+});