table { min-width: 100%; } causes some admin modals to display over the full viewport width

Problem/Motivation

#3021388: Table style update introduced the following change:

table {
-  width: 100%;
-  margin: 0 0 10px;
+  min-width: 100%;
+  margin-top: var(--space-l);
+  margin-bottom: var(--space-l);

The width attribute is overridden by the default ckeditor skin in /core/assets/vendor/ckeditor/skins/moono-lisa/editor.css, but min-width is not:

.cke_reset_all * {
...
width: auto;
...
}

This causes some modal to display over the full width of the viewport:

Proposed resolution

Use table { width: 100%; } in line with the Seven implementation.

Remaining tasks

1. Write a patch
2. Review
3. Commit

User interface changes

All modals use a width similar to Seven in Drupal core.

API changes

None.

Data model changes

None.