fix: Don't warn if field is acually 0 width (#6558)

One part of issue 6557.

core/field.ts

@@ -797,10 +797,13 @@ export abstract class Field implements IASTNodeLocationSvg,
     } else if (this.visible_ && this.size_.width === 0) {
       // If the field is not visible the width will be 0 as well, one of the
       // problems with the old system.
-      console.warn(
-          'Deprecated use of setting size_.width to 0 to rerender a' +
-          ' field. Set field.isDirty_ to true instead.');
       this.render_();
+      // Don't issue a warning if the field is actually zero width.
+      if (this.size_.width !== 0) {
+        console.warn(
+            'Deprecated use of setting size_.width to 0 to rerender a' +
+            ' field. Set field.isDirty_ to true instead.');
+      }
     }
     return this.size_;
   }

core/utils/parsing.ts

@@ -29,8 +29,7 @@ function tokenizeInterpolationInternal(
     message: string, parseInterpolationTokens: boolean): (string|number)[] {
   const tokens = [];
   const chars = message.split('');
-  chars.push(  // End marker.
-      '');
+  chars.push('');  // End marker.
   // Parse the message with a finite state machine.
   // 0 - Base case.
   // 1 - % found.