fix(shared): Remove testUtils & smaller updates (#1868)

* chore(shared): Smaller package.json maintenance

* chore(repo): Remove testUtils from shared pkg

* chore(shared): Use correct testRegex

* fix(shared): Remove nested package.json files in dist

* chore(repo): Update lock file

* Create serious-meals-wink.md

Author: LekoArts

.changeset/serious-meals-wink.md

@@ -0,0 +1,9 @@
+---
+"@clerk/shared": patch
+---
+
+Internal updates and improvements, with the only public change that npm should no longer complain about missing `react` peerDependency.
+
+Updates:
+- Remove `@clerk/shared/testUtils` export (which was only used for internal usage)
+- Add `peerDependenciesMeta` to make `react` peerDep optional