[wasm] Fix include rules of jump-table-assembler.h

CL https://crrev.com/c/1801846 made the presubmit bot red:

ERROR in /b/s/w/ir/cache/builder/v8/src/wasm/jump-table-assembler.cc
  Illegal include: "src/wasm/jump-table-assembler.h"
      Because of "-src" from src/wasm's specific_include_rules.

This CL fixes that.

R=mstarzinger@chromium.org

No-Try: true
Change-Id: I7cd947d9086bbf968a1ae89cb38f016abd819c05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1803338Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63758}

src/wasm/DEPS

@@ -4,6 +4,7 @@ specific_include_rules = {
     # The only allowed include is 'src/codegen' for assembler headers.
     "-src",
     "+src/codegen",
+    "+src/wasm/jump-table-assembler.h",
   ],
   "c-api\.cc": [
     "+include/libplatform/libplatform.h",