RFR: 8325690: The scrollable element <div> with non-interactive content is not tabbable [v38]

[psoujany]

> The scrollable element `<div>` with non-interactive content is not tabbable. Grid columns in the javadoc stylesheet has overflow: auto, which is failing Accessibility checks.
> https://bugs.openjdk.org/browse/JDK-8325690

psoujany has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 42 additional commits since the last revision:

 - Merge branch 'openjdk:master' into remove-overflow
 - Add table role to summary tables
 - Add table role to summary tables
 - Add table role to summary tables
 - Add table role to summary tables
 - Add grid role to tables
 - Add grid role to tables
 - Merge branch 'remove-overflow' of github.com:psoujany/jdk into remove-overflow
 - Merge branch 'openjdk:master' into remove-overflow
 - Add grid role to tables
 - ... and 32 more: https://git.openjdk.org/jdk/compare/72559e1c...8748de2a

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17819/files
  - new: https://git.openjdk.org/jdk/pull/17819/files/a2b0bab7..8748de2a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17819&range=37
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17819&range=36-37

  Stats: 1936 lines in 108 files changed: 1483 ins; 165 del; 288 mod
  Patch: https://git.openjdk.org/jdk/pull/17819.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17819/head:pull/17819

PR: https://git.openjdk.org/jdk/pull/17819