fix(tia): exclude vendor from xdebug coverage while recording

[lazerg]

What:

• Bug Fix
• New Feature

Description:

The recorder starts Xdebug coverage with no filter, so every executed line of vendor/ is traced and then dropped by the scope check in endTest(). The pcov path in the same class already narrows the file list before it collects anything.

Recorder::activate() now calls xdebug_set_filter() with the directories SourceScope treats as noise (vendor, node_modules, the cache directories, storage/framework), so Xdebug never instruments them. Xdebug only honours the filter for files compiled after it is set, which is why the call sits in activate() and not next to xdebug_start_code_coverage() in beginTest(). Every prefix ends with a separator, otherwise vendor would also match a sibling such as vendored.

The scope check after xdebug_get_code_coverage() stays, since the filter is a prefilter and not a replacement for it. The recorded graph is unchanged: tests/Features/Tia passes in full with Xdebug 3.5.3 in coverage mode.

I added a unit file for noisePaths() and bumped both suite tallies by hand, since composer update:snapshots would have baked in the Tests\Unit\Support\Backtrace failure I get on a clean 5.x here.

Related:

Fixes #1865