chore: change table selected item colors in light and dark theme

Author: abose

src/styles/brackets.less

@@ -1049,11 +1049,11 @@ a, img {
         }
 
         tr.selected td {
-            background-color: @bc-panel-bg-selected;
+            background-color: @bc-panel-bg-selected-table;
             color: @bc-text-thin;
 
             .dark & {
-                background-color: @dark-bc-panel-bg-selected;
+                background-color: @dark-bc-panel-bg-selected-table;
                 color: @dark-bc-text-thin;
             }
         }

src/styles/brackets_core_ui_variables.less

@@ -108,6 +108,7 @@
 @bc-panel-bg-hover:             rgba(255, 255, 255, 0.6);
 @bc-panel-bg-hover-alt:         rgba(0, 0, 0, 0.04);
 @bc-panel-bg-selected:          #d0d5d5;
+@bc-panel-bg-selected-table:    #b8c9d1;
 @bc-panel-bg-text-highlight:    #fff;
 @bc-panel-border:               rgba(0, 0, 0, 0.09);
 @bc-panel-separator:            #c3c6c5;
@@ -218,6 +219,7 @@
 @dark-bc-panel-bg-hover:             rgba(255, 255, 255, 0.12);
 @dark-bc-panel-bg-hover-alt:         rgba(0, 0, 0, 0.1);
 @dark-bc-panel-bg-selected:          #3d3e40;
+@dark-bc-panel-bg-selected-table:    #2e3e44;
 @dark-bc-panel-bg-text-highlight:    #000;
 @dark-bc-panel-border:               #000;
 @dark-bc-panel-separator:            #343434;