Fix period in absolute path munging test names (#1843)

I use a `~/code/github.com/account/repo` structure, this meant that the
`p.split(".")[0]` (which was intended to remove the `.yml` extension)
instead named all recorded tests `../../../../../../../github`

## Checklist

- [/] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [/] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [/] I have not broken the cheatsheet

---------

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>

Author: r-tae

packages/common/src/testUtil/getFixturePaths.ts

@@ -28,7 +28,7 @@ export function getRecordedTestPaths() {
   return walkFilesSync(directory)
     .filter((p) => p.endsWith(".yml") || p.endsWith(".yaml"))
     .map((p) => ({
-      name: path.relative(relativeDir, p.split(".")[0]),
+      name: path.relative(relativeDir, p.substring(0, p.lastIndexOf("."))),
       path: p,
     }));
 }