Trust dialog link styling, text changes

[JasonWeill]

Updates the link styling in UI components such as the Trust dialog. Updates the text in the Trust dialog's body. Updates the primary action button to be "Trust" instead of "Ok" to match text of dialog box.

References

See #10837.

Code changes

Removes link styling overrides that make links visually indistinct from text. Updates dialog body and button text.

User-facing changes

After change, note:

1. "Trust" (in quotes) in the dialog body
2. Primary action button renamed from "Ok" to "Trust"
3. "the Jupyter security documentation" link is now visually distinct from the rest of the dialog box's body.

Backwards-incompatible changes

None.

[jupyterlab-probot]

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[krassowski]

One backward-compatible way would be to add a selector only for dialogs and use the same styling as we already use in rendered markdown (blue colour but no underline).

[fcollonval]

LGTM

[github-actions]

Benchmark report

The execution time (in milliseconds) are grouped by test file, test type and browser.
For each case, the following values are computed: min <- [1st quartile - median - 3rd quartile] -> max.

The mean relative comparison is computed with 95% confidence.

Results table

Test file	large_code_notebook	large_md_notebook
open
chromium
actual	4348 <- [4463 - 4547 - 4773] -> 5602	2888 <- [2969 - 3037 - 3148] -> 3998
expected	4223 <- [4386 - 4423 - 4483] -> 4806	2861 <- [2919 - 2960 - 2986] -> 3148
Mean relative change	4.8% ± 1.3%	5.3% ± 1.6%
switch-from
chromium
actual	695 <- [742 - 787 - 875] -> 1248	507 <- [533 - 549 - 574] -> 663
expected	641 <- [724 - 756 - 895] -> 1033	493 <- [512 - 524 - 535] -> 567
Mean relative change	2.7% ± 3.7%	6.1% ± 1.4%
switch-to
chromium
actual	354 <- [420 - 435 - 455] -> 525	292 <- [315 - 327 - 339] -> 385
expected	343 <- [401 - 421 - 437] -> 588	283 <- [302 - 314 - 324] -> 351
Mean relative change	3.4% ± 2.5%	5.0% ± 1.5%
close
chromium
actual	633 <- [1076 - 1108 - 1150] -> 1298	520 <- [543 - 562 - 583] -> 682
expected	599 <- [1055 - 1079 - 1101] -> 1145	509 <- [528 - 538 - 550] -> 589
Mean relative change	5.0% ± 4.9%	4.9% ± 1.3%

Changes are computed with expected as reference.