RFR: 8370871: [s390x] consistently update top_frame_sp

[Amit Kumar]

Stores top_frame_sp for interpreter frames consistently. Although this is making one to assert fail in loom port but still I think this should be considered independent bug.

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Commit messages:
 - store top_frame_sp consistently

Changes: https://git.openjdk.org/jdk/pull/28042/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28042&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8370871
  Stats: 10 lines in 2 files changed: 10 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/28042.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28042/head:pull/28042

PR: https://git.openjdk.org/jdk/pull/28042