fix(core): break a label before a left parenthesis, not after it (#4553)

metrics/integration/render-tests/text-breaking/left-parenthesis/style.json

@@ -0,0 +1,43 @@
+{
+  "version": 8,
+  "metadata": {
+    "test": {
+      "width": 128,
+      "height": 128
+    }
+  },
+  "bearing": 45,
+  "sources": {
+    "geojson": {
+      "type": "geojson",
+      "data": {
+        "type": "Point",
+        "coordinates":
+          [
+            0,
+            0
+          ]
+      }
+    }
+  },
+  "glyphs": "local://glyphs/{fontstack}/{range}.pbf",
+  "layers": [
+    {
+      "id": "symbol",
+      "type": "symbol",
+      "source": "geojson",
+      "layout": {
+        "symbol-placement": "point",
+        "symbol-spacing": 20,
+        "text-allow-overlap": true,
+        "text-rotation-alignment": "auto",
+        "text-max-width": 5,
+        "text-field": "Freiburg(Bresigau) HBF",
+        "text-font": [
+          "Open Sans Semibold",
+          "Arial Unicode MS Bold"
+        ]
+      }
+    }
+  ]
+}

metrics/integration/render-tests/text-breaking/whitespace/style.json

@@ -0,0 +1,43 @@
+{
+  "version": 8,
+  "metadata": {
+    "test": {
+      "width": 128,
+      "height": 128
+    }
+  },
+  "bearing": 45,
+  "sources": {
+    "geojson": {
+      "type": "geojson",
+      "data": {
+        "type": "Point",
+        "coordinates":
+          [
+            0,
+            0
+          ]
+      }
+    }
+  },
+  "glyphs": "local://glyphs/{fontstack}/{range}.pbf",
+  "layers": [
+    {
+      "id": "symbol",
+      "type": "symbol",
+      "source": "geojson",
+      "layout": {
+        "symbol-placement": "point",
+        "symbol-spacing": 20,
+        "text-allow-overlap": true,
+        "text-rotation-alignment": "auto",
+        "text-max-width": 5,
+        "text-field": "Freiburg (Bresigau) HBF",
+        "text-font": [
+          "Open Sans Semibold",
+          "Arial Unicode MS Bold"
+        ]
+      }
+    }
+  ]
+}