[monorepo] remove PII and variables from error messages (#31508)

* [monorepo] remove PII and variables from error messages

Exclusions:
- scripts
- tests
- fuzzing
- SplitTestManager (messages are sent to admin frontend)
- Group setup (we may want an error per unique tuple)
- sharejs (unused types; text type errors are shadowed already)
- history-v1 error messages that are used by the ErrorRecorder
- errors that flag issues with configuration/call signatures

I've used these search terms for finding unwanted error messages:
- new Error(`
- new Error\(\n\s+` (regex search)
- new OError(`
- new OError\(\n\s+` (regex search)

* [web] throw NotFoundError from ProjectLocator

* [github-sync] fix OError.tag call in script

Co-authored-by: Jessica Lawshe <jessica.lawshe@overleaf.com>

* [templates] revert changes to test client

---------

Co-authored-by: Jessica Lawshe <jessica.lawshe@overleaf.com>
GitOrigin-RevId: 736857a4fc5d9bfb0f8cb03e0f004eda87e5a220

package-lock.json

@@ -589,6 +589,9 @@
       "name": "@overleaf/piece-table",
       "version": "1.0.0",
       "license": "Proprietary",
+      "dependencies": {
+        "@overleaf/o-error": "*"
+      },
       "devDependencies": {
         "chai": "^4.3.6",
         "mocha": "^11.1.0",