fix(devtools): remove property tab css that is hiding directive metadata (#59493)

It looks like this height property was redundant prior to upgrading to angular/material 19.1.0-rc.0. An interaction between this property and that update caused elements inside of material expansion panels to be hidden.

This PR removes this unnecessary height assignment entirely.

PR Close #59493

devtools/projects/ng-devtools/src/lib/devtools-tabs/directive-explorer/property-tab/property-view/property-view-tree.component.scss

@@ -2,7 +2,6 @@
   width: 100%;
   display: block;
   overflow: auto;
-  height: calc(100% - 24px);
 
   mat-tree {
     display: table;