Amaresh - Fix: Add Lost Time for project/team returns 404 due to missing personId lookup

[amaresh2001]

Description

POST /api/TimeEntry was returning a 404 ("User not found") for any lost-time entry of type project or team, so those entries silently failed to save even after the frontend fix in PR #4738 stopped the UI from erroring visibly. Root cause: postTimeEntryController unconditionally did UserProfile.findById(timeEntry.personId) and 404'd if no user was found, but project and team type lost-time entries never have a personId (only a projectId or teamId), so the lookup always failed for those two types.

Related PRS (if any):

This backend PR is related to the #4738 frontend PR.
To test this backend PR you need to checkout the #4738 frontend PR (branch shravya/bugfix/3824).

Main changes explained:

• Update src/controllers/timeEntryController.js for making the UserProfile lookup/update in postTimeEntry conditional on entryType being person or default (the only types that carry a personId). For project/team entries, the user-profile lookup, the 404 guard, the deactivation check, the tangible/intangible hour updates, and the isFirstTimelog update are all skipped, and the time entry is saved directly. No behavior change for person/default entries.
• Update src/controllers/timeEntryController.js for clearing the LostTeamEntry_* cache in postTimeEntry when a new team entry is added. ' editTimeEntryanddeleteTimeEntryalready did this, butpostTimeEntry(create) didn't, so newly-added team lost time sat behind a stale cached response for up to 5 minutes (the cache'sstdTTL`) before showing up under "Show Team Lost Time".

How to test:

1. Check out this branch (amaresh/fix-lost-time-post-entry-404) and run npm install and npm run dev to run this PR locally
2. Check out frontend PR #4738 (branch shravya/bugfix/3824) and run it locally, pointed at this backend
3. Clear site data/cache
4. Log in as a user with the Owner role
5. Go to Reports page → scroll to the Lost Time section → click Add Lost Time
6. Select Type: Project (or Team), fill in a project/team name, date, and time, then Submit
7. Verify function "Add Lost Time" works: you get a success response (no 404) and the entry appears under Show Project Lost Time (or Show Team Lost Time)
8. For Team specifically: click Show Team Lost Time first (to warm the cache), then submit a new Team entry, then click Show Team Lost Time again, verify the new entry appears immediately, not after a ~5 minute delay
9. As a regression check, also submit a Person type entry and confirm it still works exactly as before

Screenshots or videos of changes:

Note: