Fix MUI 7 esm support

[heath-freenome]

Reasons for making this change

With MUI 7 having full ESM support, our tsc-alias replacer support is no longer needed, and in fact breaks the way MUI 7 ESM support works

• Updated .gitIgnore to globalize the *Replacer.js and *Replace.cjs names
• Deleted the muiReplacer.ts file as it is no longer needed
• In @rjsf/mui, removed the tsc-alias replacer support as follows:
  • Deleted the tsconfig.replacer.json
  • Updated the package.json to remove the compileReplacer script and updated the build:ts script not to use it
  • Updated the tsconfig.build.json to remove the muiReplacer reference
• Updated the CHANGELOG.md accordingly

Checklist

• I'm updating documentation
  • I've checked the rendering of the Markdown text I've added
• I'm adding or updating code
  • I've added and/or updated tests. I've run npx nx run-many --target=build --exclude=@rjsf/docs && npm run test:update to update snapshots, if needed.
  • I've updated docs if needed
  • I've updated the changelog with a description of the PR
• I'm adding a new feature
  • I've updated the playground with an example use of the feature