SDF: Fix infinite layout loop (#224)

Another hack to prevent an infinite loop situation that was introduced
in v0.8.0.

I've written up an issue to address more wholistically the issues with
the SDF layout engine
- #223

Fixes #220

Author: frank-weindel

src/core/text-rendering/renderers/SdfTextRenderer/internal/layoutText.ts

@@ -235,6 +235,9 @@ export function layoutText(
             );
             curX = lastWord.xStart;
             bufferOffset = lastWord.bufferOffset;
+            // HACK: For the rest of the line when inserting the overflow suffix,
+            // set contain = 'none' to prevent an infinite loop.
+            contain = 'none';
           }
         } else {
           // This glyph fits, so we can add it to the buffer