RFR: 8365047: Remove exception handler stub code in C2 [v10]

[Ruben]

> The C2 exception handler stub code is only a trampoline to the generated exception handler blob. This change removes the extra step on the way to the generated blob.
> 
> According to some comments in the source code, the exception handler stub code used to be patched upon deoptimization, however presumably these comments are outdated as the patching upon deoptimization happens for post-call NOPs only.

Ruben has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 15 commits:

 - Rename deoptHandlerOffsetField -> deoptHandlerEntryOffsetField
 - Merge from the main branch
 - Address review comments and fix a mistype
 - Check for NOP and MOVK separately in NativePostCallNop
 - Test for deoptimization in virtual threads
   
   Change-Id: I9ef51b426d34e9b44a3891f6a45307232f900e5a
 - Merge from the main branch
 - Address review comments
 - Address review comments
 - Address review comments
 - The patch is contributed by @TheRealMDoerr
 - ... and 5 more: https://git.openjdk.org/jdk/compare/1922c4fd...359c2f18

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Changes: https://git.openjdk.org/jdk/pull/26678/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26678&range=09
  Stats: 569 lines in 41 files changed: 268 ins; 216 del; 85 mod
  Patch: https://git.openjdk.org/jdk/pull/26678.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26678/head:pull/26678

PR: https://git.openjdk.org/jdk/pull/26678