fix(material/dialog): updates dialog max-height in landscape (#29853)

* fix(material/dialog): updates dialog max-height in landscape

Updates Angular Component Dialog component to have a max-height of
95vh which gives it a calculable height for its contents to adjust
on smaller screens or in landscape mode so that the action buttons
are able to be accessed by scrolling rather than the dialog window
cutting them off.

Fixes b/323588333

* refactor(material/dialog): reverted max-height to inherit

Updates previous fix to revert max-height back to inherit.

Fixes b/323588333

src/material/dialog/dialog.scss

@@ -11,6 +11,11 @@ $mat-dialog-content-max-height: 65vh !default;
 // don't expose this value as variable.
 $mat-dialog-button-horizontal-margin: 8px !default;
 
+// Dialog container max height. This has been given a default value so the
+// flex-children can be calculated and not overflow on smaller screens.
+// Fixes b/323588333
+$mat-dialog-container-max-height: 95vh !default;
+
 // Whether to emit fallback values for the structural styles. Previously MDC was emitting
 // paddings in the static styles which meant that users would get them even if they didn't
 // include the `dialog-base`. Eventually we should clean up the usages of this flag.