fixup! feat(material-experimental): MDC-based version of dialog

Fix dialog overlay position config

Author: devversion

src/material-experimental/mdc-dialog/_mdc-dialog-structure-overrides.scss

@@ -29,8 +29,8 @@
 
     // MDC sets `min-height`, `max-height`, `min-width` and `max-height` We can't rely on
     // this for the dialog content scrolling (as explained above), and since we allow for
-    // custom positioning through overlay configuration, we remove the rectangle restrictions
-    // and scale based on the CDK overlay container.
+    // custom positioning through overlay configuration, we remove the rectangle
+    // restrictions and scale based on the CDK overlay container.
     &, .mdc-dialog__container, .mdc-dialog__surface {
       max-height: inherit;
       min-height: inherit;
@@ -44,8 +44,13 @@
     // components can be immediate children of the surface and make this a noop. If only
     // templates or DOM elements are projected, the flex display could cause unexpected
     // alignment issues as explained in our coding standards (see `CODING_STANDARDS.md`).
+    // Additionally, the surface by default should expand based on the parent overlay
+    // boundaries (so that boundaries for the overlay config are respected). The surface
+    // by default would only expand based on its content.
     .mdc-dialog__surface {
       display: block;
+      width: 100%;
+      height: 100%;
     }
   }
 }