style: change large size fontsize 14px -> 16px, effect select,treeselect,cascader, align with input, close #859 (#932)

packages/semi-foundation/cascader/cascader.scss

@@ -31,6 +31,9 @@ $module: #{$prefix}-cascader;
     &-large {
         min-height: $height-cascader_large;
         line-height: $height-cascader_large;
+        .#{$module}-selection {
+            @include font-size-header-6;
+        }
     }
 
     &-focus {

packages/semi-foundation/select/select.scss

@@ -45,6 +45,9 @@ $multiple: #{$module}-multiple;
     &-large {
         min-height: $height-select_large;
         line-height: $height-select_large;
+        .#{$module}-selection {
+            @include font-size-header-6;
+        }
     }
 
     &-open,

packages/semi-foundation/treeSelect/treeSelect.scss

@@ -228,6 +228,9 @@ $module: #{$prefix}-tree-select;
     &-large {
         min-height: $height-treeSelect_large;
         line-height: $font-treeSelect_large-lineHeight;
+        .#{$module}-selection {
+            @include font-size-header-6;
+        }
     }
 
     &-arrow {