Fixes #15422: Alternate fix for temporal input sizing in input groups

dist/css/bootstrap.css

@@ -2590,13 +2590,21 @@ input[type="search"] {
   input[type="date"].input-sm,
   input[type="time"].input-sm,
   input[type="datetime-local"].input-sm,
-  input[type="month"].input-sm {
+  input[type="month"].input-sm,
+  .input-group-sm input[type="date"],
+  .input-group-sm input[type="time"],
+  .input-group-sm input[type="datetime-local"],
+  .input-group-sm input[type="month"] {
     line-height: 30px;
   }
   input[type="date"].input-lg,
   input[type="time"].input-lg,
   input[type="datetime-local"].input-lg,
-  input[type="month"].input-lg {
+  input[type="month"].input-lg,
+  .input-group-lg input[type="date"],
+  .input-group-lg input[type="time"],
+  .input-group-lg input[type="datetime-local"],
+  .input-group-lg input[type="month"] {
     line-height: 46px;
   }
 }

less/forms.less

@@ -178,18 +178,16 @@ input[type="search"] {
   input[type="datetime-local"],
   input[type="month"] {
     line-height: @input-height-base;
-  }
-  input[type="date"].input-sm,
-  input[type="time"].input-sm,
-  input[type="datetime-local"].input-sm,
-  input[type="month"].input-sm {
-    line-height: @input-height-small;
-  }
-  input[type="date"].input-lg,
-  input[type="time"].input-lg,
-  input[type="datetime-local"].input-lg,
-  input[type="month"].input-lg {
-    line-height: @input-height-large;
+
+    &.input-sm,
+    .input-group-sm & {
+      line-height: @input-height-small;
+    }
+
+    &.input-lg,
+    .input-group-lg & {
+      line-height: @input-height-large;
+    }
   }
 }