Revert "Disable UseOriginalDomOffsetsForOffsetMap"

This reverts commit 4e7a681d1d.

Reason for revert:
LUCI Bisection has identified this change as the cause of a test failure. See the analysis: https://ci.chromium.org/ui/p/chromium/bisection/test-analysis/b/6422978456715264

Sample build with failed test: https://ci.chromium.org/b/8715585640588827681
Affected test(s):
[ninja://:blink_web_tests/editing/input/selectall-in-input-with-text-security.html](https://ci.chromium.org/ui/test/chromium/ninja:%2F%2F:blink_web_tests%2Fediting%2Finput%2Fselectall-in-input-with-text-security.html?q=VHash%3A3f6ad5ea70ae310a)

If this is a false positive, please report it at http://b.corp.google.com/createIssue?component=1199205&description=Analysis%3A+https%3A%2F%2Fci.chromium.org%2Fui%2Fp%2Fchromium%2Fbisection%2Ftest-analysis%2Fb%2F6422978456715264&format=PLAIN&priority=P3&title=Wrongly+blamed+https%3A%2F%2Fchromium-review.googlesource.com%2Fc%2Fchromium%2Fsrc%2F%2B%2F6505502&type=BUG

Original change's description:
> Disable UseOriginalDomOffsetsForOffsetMap
>
> When enabled, this flag causes a regression in rendering disclosure-open
> on android which is made visible by default in the browser for
> customizable select.
>
> Bug: 415205686
> Change-Id: I922c1cfd09fa90b1da574c947e71f87a2a8e7dc0
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6505502
> Reviewed-by: Mason Freed <masonf@chromium.org>
> Commit-Queue: Joey Arhar <jarhar@chromium.org>
> Auto-Submit: Joey Arhar <jarhar@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1456611}
>

Bug: 415205686
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I10840d036c3238fe878cfabb3c98e53302e22ce2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6519216
Owners-Override: Antonio Sartori <antoniosartori@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Reviewed-by: Sayed Elabady <elabadysayed@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1456976}

third_party/blink/renderer/platform/runtime_enabled_features.json5

@@ -4917,6 +4917,7 @@
       // This flag uses the original DOM text for input when the password
       // echo is enabled to create the offset_map.
       name: "UseOriginalDomOffsetsForOffsetMap",
+      status: "stable",
     },
     {
       name: "UsePositionForPointInFlexibleBoxWithSingleChildElement",