### Summary
This PR fixes an inconsistency in the display of application versions in
the Admin Panel. Previously, the "Current version" was displayed with a
"v" prefix (e.g., `v1.1.1`), while the "Latest version" was displayed
without it (e.g., `1.1.1`).
### Problem
The inconsistency originated from two different data sources being
handled differently in the backend:
- `currentVersion` was read directly from the `APP_VERSION`
configuration variable, which includes the "v" prefix.
- `latestVersion` was fetched from the Docker Hub API, and the
`semver.coerce()` function was used to parse it, which strips the "v"
prefix.

### Solution
The fix addresses the root cause in the [AdminPanelService] on the
backend. The `semver.coerce()` function is now also applied to the
`currentVersion`.
This ensures that both version numbers are normalized at the data
source, providing a consistent format before being sent to the frontend.
This is a cleaner approach than manipulating the data on the client
side.
**Before:**
- Current version: `v1.1.1`
- Latest version: `1.1.1`
**After:**
- Current version: `1.1.1`
- Latest version: `1.1.1`
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Co-authored-by: prastoin <paul@twenty.com>