Don't change the value for altBoundary option (#33684)

- Since bootstrap is not changing the default value of `elementContext`
  option, changing the value of `altBoundary` option is not needed for
any modifier in real

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

js/src/tooltip.js

@@ -502,7 +502,6 @@ class Tooltip extends BaseComponent {
         {
           name: 'flip',
           options: {
-            altBoundary: true,
             fallbackPlacements: this.config.fallbackPlacements
           }
         },