test(codegen): match the alloca TYPE, not its whole def text (#7675 follow-up) (#7681)

* test(codegen): match the alloca TYPE, not its whole def text

An `align` suffix would have emptied `temp_root_slots` and made every
`assert_no_temp_rooting` vacuous again — the exact failure this PR removes.
Matched through one shared `root_slots::alloca_type` in all three places that
compared whole def text, with a regression test each that fails against the old
compare. Also routes the accumulator write-back check through `slot_holding` so
it tolerates the same boxing step its neighbours do, and drops a redundant
load-specific pass in `zero_seeded_slots` that re-inserted what the generic
`, ptr %s` scan already caught. Raised by review on #7675.

Claude-Session: https://claude.ai/code/session_01Y1QZ5wUP9gRSwpiweT4Wix

* docs: changelog fragment for the alloca-type prefix match

Claude-Session: https://claude.ai/code/session_01Y1QZ5wUP9gRSwpiweT4Wix

* chore: bump version to 0.5.1386

Claude-Session: https://claude.ini/code/session_01Y1QZ5wUP9gRSwpiweT4Wix

---------

Co-authored-by: Ralph Küpper <ralph@skelpo.com>

Author: proggeramlug

CLAUDE.md

@@ -8,7 +8,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 Perry is a native TypeScript compiler written in Rust that compiles TypeScript source code directly to native executables. It uses SWC for TypeScript parsing and LLVM for code generation.
 
-**Current Version:** 0.5.1385
+**Current Version:** 0.5.1386
 
 
 ## TypeScript Parity Status