RFR: 8300054: Use static_assert in basic_types_init [v2]

[Albert Mingkun Yang]

> Simple change to use `static_assert` when applicable inside a function.

Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:

  review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/11971/files
  - new: https://git.openjdk.org/jdk/pull/11971/files/108368e2..688d5762

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11971&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11971&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/11971.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11971/head:pull/11971

PR: https://git.openjdk.org/jdk/pull/11971