v9.4.5-canary.15

Patches

• Add A/B Tests and Feature Flags example: #13629
• Add example for proxying upstream with custom routes: #14374
• Fix prefetch and some other issues with optional catch all: #14400
• Open click-to-open editor in foreground for windows: #14307
• Prettier trailingComma default value to es5 since 2.0: #14391
• Do not remove no-FOUC styles too early: #14448

Credits

Huge thanks to @andresz1, @ijjk, @Janpot, @darshkpatel, and @matamatanot for helping!