RFR: 8326369: Bimorphic inlining not applied at a call site that was initially monomorphic [v2]

[Galder Zamarreño]

> This issue was fixed by JDK-8339299 indirectly (see [PR](https://github.com/openjdk/jdk/pull/20786)), but the PR for 8339299 didn't include any new tests, so I'm sending this PR with the test that Filipp added in 8326369 so that such issue doesn't come back inadvertently. I've added him as co-author and applied some small formatting changes.

Galder Zamarreño has updated the pull request incrementally with one additional commit since the last revision:

  Added copyright and @bug identifiers

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21920/files
  - new: https://git.openjdk.org/jdk/pull/21920/files/1f548010..1bf6992c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21920&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21920&range=00-01

  Stats: 25 lines in 1 file changed: 24 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21920.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21920/head:pull/21920

PR: https://git.openjdk.org/jdk/pull/21920