Prepare Python Environments 1.44.0 release (#2017)

## Summary
Prepare the **1.44.0** stable release using the merged release-PR
automation.

- Change only root `package.json`'s top-level version: `1.43.0` ->
`1.45.0`.
- Keep `main` on the next odd development minor, preserving the existing
suffix-free version format.
- After approval and merge, the existing release workflow derives stable
`1.44.0` and creates `release/1.44.0` from the merged source. Its push
can trigger Azure stable publishing; normal release approvals still
apply.
- No `api/package.json`, lockfiles, dependencies, changelogs, workflows,
tags, or publishing configuration are changed. No release branch has
been created manually. Auto-merge is not enabled.

## Validation
- Prettier and whitespace checks passed; the diff is one insertion and
one deletion in root `package.json` only.
- The exact release/version Python scripts pinned by the consumer
workflows at `4e0c4335bbf6b1a274673e22d9c39cd7efb93ccf` validate this
candidate locally.
- Isolated stable-manifest serialization passed without changing other
JSON values; calculated branch: `release/1.44.0`.
- PR creator repository write access verified. The exact target release
ref was absent at preparation.
- Hosted [Release PR /
Plan](https://github.com/microsoft/vscode-python-environments/actions/runs/43313829400)
passed on exact head `fce6691a5c86ade7922dc56b54a69d1239c6d79f`:
validated candidate `1.45.0`, executed PR-creator authorization for
`edvilme`, and calculated stable `1.44.0` with branch `release/1.44.0`.

## Version-only check policy
Uses the repository's existing `skip package*.json` label for this
top-level version-only bump. No dependency or lockfile change is needed;
changing a lockfile would make the release action classify this as an
ordinary mixed-file PR.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 956d3afd-ae0b-486c-a60c-3a6276c23213

Author: edvilme

package.json

@@ -2,7 +2,7 @@
     "name": "vscode-python-envs",
     "displayName": "Python Environments",
     "description": "Provides a unified python environment experience",
-    "version": "1.43.0",
+    "version": "1.45.0",
     "publisher": "ms-python",
     "engines": {
         "vscode": "^1.110.0-20260204"