Use relative file location in source maps with `relativeSourceLocatio…

…n` enabled (#5464)

## Summary

This option was added back when source maps were not included in
#3141.

Source map addition for better LogBox experience was added in
#3846 -
but it didn't take into account `relativeSourceLocation`. This PR fixes
this and there is no more absolute location in the source map while
`relativeSourceLocation` is on.

I haven't found a way to generate the source map with relative location
out-of-the-box.

## Test plan

In `WorkletExample` see that LogBox is working as intended. Also plugin
tests maybe.

__tests__/plugin.test.ts

@@ -1,6 +1,6 @@
 import { html } from 'code-tag';
 import plugin from '../plugin';
-import { TransformOptions, transformSync } from '@babel/core';
+import { BabelFileResult, TransformOptions, transformSync } from '@babel/core';
 import traverse from '@babel/traverse';
 import { strict as assert } from 'assert';
 import '../plugin/jestUtils';
@@ -97,6 +97,23 @@ describe('babel plugin', () => {
       );
     });
 
+    it('uses relative source location when `relativeSourceLocation` is set to `true`', () => {
+      process.env.REANIMATED_JEST_SHOULD_MOCK_SOURCE_MAP = '0'; // don't mock source maps
+      const input = html`<script>
+        function foo() {
+          'worklet';
+          var foo = 'bar';
+        }
+      </script>`;
+
+      const { code } = runPlugin(input, undefined, {
+        relativeSourceLocation: true,
+      });
+
+      const matches = code?.match(new RegExp(`..${MOCK_LOCATION}`, 'g'));
+      expect(matches).toHaveLength(2);
+    });
+
     it('removes comments from worklets', () => {
       const input = html`<script>
         const f = () => {

plugin/src/makeWorklet.ts

@@ -107,7 +107,7 @@ export function makeWorklet(
     ? functionExpression(null, clone.params, clone.body)
     : clone;
 
-  const [funString, sourceMapString] = buildWorkletString(
+  let [funString, sourceMapString] = buildWorkletString(
     transformed.ast,
     variables,
     functionName,
@@ -155,6 +155,11 @@ export function makeWorklet(
     let location = state.file.opts.filename;
     if (state.opts.relativeSourceLocation) {
       location = relative(state.cwd, location);
+      // It seems there is no designated option to use relative paths in generated sourceMap
+      sourceMapString = sourceMapString?.replace(
+        state.file.opts.filename,
+        location
+      );
     }
 
     initDataObjectExpression.properties.push(