RFR: 8373697: AArch64: Remove deopt stub code for nmethods with small stack frames

[Ruben]

Removal of deoptimization stub codes improves density of compiled code.
It is possible at least for methods with relatively small stack frames.

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Commit messages:
 - 8373697: AArch64: Remove deopt stub code for nmethods with small stack frames
 - 8373697: AArch64: is_deoptimized should only be set for compiled frames
 - 8373697: Merge nmethod::is_deopt_entry into nmethod::is_deopt_pc.

Changes: https://git.openjdk.org/jdk/pull/28857/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28857&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373697
  Stats: 889 lines in 49 files changed: 740 ins; 72 del; 77 mod
  Patch: https://git.openjdk.org/jdk/pull/28857.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28857/head:pull/28857

PR: https://git.openjdk.org/jdk/pull/28857