Fixes #13997: Move min-height for radio/checkbox to their inner label

dist/css/bootstrap.css

@@ -2418,12 +2418,12 @@ input[type="month"].input-lg {
 .checkbox {
   position: relative;
   display: block;
-  min-height: 20px;
   margin-top: 10px;
   margin-bottom: 10px;
 }
 .radio label,
 .checkbox label {
+  min-height: 20px;
   padding-left: 20px;
   margin-bottom: 0;
   font-weight: normal;

docs/dist/css/bootstrap.css

@@ -2418,12 +2418,12 @@ input[type="month"].input-lg {
 .checkbox {
   position: relative;
   display: block;
-  min-height: 20px;
   margin-top: 10px;
   margin-bottom: 10px;
 }
 .radio label,
 .checkbox label {
+  min-height: 20px;
   padding-left: 20px;
   margin-bottom: 0;
   font-weight: normal;

less/forms.less

@@ -208,11 +208,11 @@ input[type="month"] {
 .checkbox {
   position: relative;
   display: block;
-  min-height: @line-height-computed; // clear the floating input if there is no label text
   margin-top: 10px;
   margin-bottom: 10px;
 
   label {
+    min-height: @line-height-computed; // Ensure the input doens't jump when no text
     padding-left: 20px;
     margin-bottom: 0;
     font-weight: normal;