[jdk11u-dev] RFR: 8316211: Open source several manual applet tests

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

text block modified as not supported.
lambda switch modified as not supported.
StringBuilder#isEmpty() modified as not supported.

-------------

Commit messages:
 - Backport 2f311d59dcbbf7605e52fac0b8ebd35d7d51a48b

Changes: https://git.openjdk.org/jdk11u-dev/pull/2852/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2852&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316211
  Stats: 551 lines in 4 files changed: 551 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2852.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2852/head:pull/2852

PR: https://git.openjdk.org/jdk11u-dev/pull/2852