fix: IllegalArgumentException in Colorizer event processing.

The Colorizer should not process stale tokens if they go over the end of
the line in the current document. This prevents IllegalArgumentException
occurring when the Tokenizer thread runs slow or is delayed relative to
the textChanged notification in the reconciler.

org.eclipse.tm4e.ui/src/main/java/org/eclipse/tm4e/ui/text/Colorizer.java

@@ -107,7 +107,7 @@ void colorize(final IRegion damageRegion, final ITMDocumentModel tmModel) throws
 			List<TMToken> tokens = null;
 			for (int lineIndex = fromLineIndex; lineIndex <= toLineIndex; lineIndex++) {
 				tokens = tmModel.getLineTokens(lineIndex);
-				if (tokens == null) {
+				if (tokens == null || (!tokens.isEmpty() && tokens.get(tokens.size() - 1).startIndex > doc.getLineLength(lineIndex))) {
 					if (TMUIPlugin.isLogTraceEnabled())
 						TMUIPlugin.logTrace("TextMate tokens not yet available for line " + lineIndex);
 					continue;