Enhance the resource pack ability for CoverTabs (#6084)

Author: Ranzuu

src/main/java/gregtech/common/modularui2/factory/GTBaseGuiBuilder.java

@@ -165,7 +165,7 @@ public ModularPanel build() {
     private IWidget createCoverTabs() {
         Flow column = Flow.column()
             .coverChildren()
-            .leftRel(0f, 2, 1f)
+            .leftRel(0f, 3, 1f)
             .top(1)
             .childPadding(2);
         for (int i = 0; i < 6; i++) {

src/main/java/gregtech/common/modularui2/widget/CoverTabButton.java

@@ -51,7 +51,7 @@ public CoverTabButton(ICoverable coverable, ForgeDirection side, IPanelHandler p
                         .marginTop(1)))
             .tooltipBuilder(this::buildTooltip)
             .tooltipAutoUpdate(true)
-            .size(18, 20);
+            .size(20, 20);
     }
 
     private void buildTooltip(RichTooltip builder) {