feat: strip new tab notice from excerpts / make new tab notice config…

[Yannicvanveen]

Momenteel verschijnt de tekst '(opent in nieuw tablad)' die we toevoegen aan links met een target="_blank" in automatisch gegenereerde excerpts. Deze PR maakt deze tekst configureerbaar en haalt hem uit de excerpt.

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Pull request overview

This PR makes the “opens in new tab” accessibility notice configurable and prevents it from appearing in automatically generated WordPress excerpts.

Changes:

• Introduces a configurable $newTabNotice value (via theme.a11y_new_tab_notice with a translated default).
• Uses the configured notice when appending an sr-only span to target="_blank" links.
• Adds a get_the_excerpt filter to strip the notice from auto-generated excerpts.

Comments suppressed due to low confidence (1)

src/Theme.php:213

• createElement('span', ' ' . $this->newTabNotice) always prefixes a space even if the configured notice already contains leading whitespace. This can introduce unintended double-spacing in the rendered output. Prefer normalizing the configured notice once (e.g., trim leading whitespace in the constructor) and then add a single separator space here, or only add the separator when needed.

			try {
				$srOnlySpan = $doc->createElement('span', ' ' . $this->newTabNotice);
			} catch (\DOMException $e) {
				continue;
			}
			$srOnlySpan->setAttribute('class', 'sr-only');
			$link->appendChild($srOnlySpan);

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