[BUGFIX] RTE Link Wizard layout is inconsistent

Use same styling as in RTE Image wizard.
Order form fields in the same order as in TYPO3 Link Wizard. However,
the RTE has more configurable fields and more configuration options for
common fields.

Resolves: #55951
Releases: 6.2
Change-Id: Ia4cb513edb8c5fb825e8d8f54e29ed94f3bb59e3
Reviewed-on: https://review.typo3.org/27590
Reviewed-by: Stanislas Rolland
Tested-by: Stanislas Rolland