[riscv64][wasm-gc][liftoff] Reserve a stack slot for feedback

Port the rest part of 9d3c9d47

The first part is at:
https://chromium-review.googlesource.com/c/v8/v8/+/3212059

Bug: v8:7748
Change-Id: I8b39deec2eee35511f56e826d92bf52e32a81daf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3226551Reviewed-by: Yahan Lu <yahan@iscas.ac.cn>
Commit-Queue: Yahan Lu <yahan@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#77450}

src/wasm/baseline/riscv64/liftoff-assembler-riscv64.h

@@ -391,7 +391,7 @@ void LiftoffAssembler::AbortCompilation() { AbortedCodeGeneration(); }
 
 // static
 constexpr int LiftoffAssembler::StaticStackFrameSize() {
-  return liftoff::kInstanceOffset;
+  return liftoff::kFeedbackVectorOffset;
 }
 
 int LiftoffAssembler::SlotSizeForType(ValueKind kind) {