Revert "fix(animations): properly support boolean-based transitions and state changes (#19279)"

This reverts commit a8920eb774.

packages/animations/src/animation_metadata.ts

@@ -257,11 +257,6 @@ export interface AnimationStaggerMetadata extends AnimationMetadata {
  the
  * trigger is bound to (in the form of `[@triggerName]="expression"`.
  *
- * Animation trigger bindings strigify values and then match the previous and current values against
- * any linked transitions. If a boolean value is provided into the trigger binding then it will both
- * be represented as `1` or `true` and `0` or `false` for a true and false boolean values
- * respectively.
- *
  * ### Usage
  *
  * `trigger` will create an animation trigger reference based on the provided `name` value. The
@@ -739,22 +734,6 @@ export function keyframes(steps: AnimationStyleMetadata[]): AnimationKeyframesSe
  * ])
  * ```
  *
- * ### Boolean values
- * if a trigger binding value is a boolean value then it can be matched using a transition
- * expression that compares `true` and `false` or `1` and `0`.
- *
- * ```
- * // in the template
- * <div [@openClose]="open ? true : false">...</div>
- *
- * // in the component metadata
- * trigger('openClose', [
- *   state('true', style({ height: '*' })),
- *   state('false', style({ height: '0px' })),
- *   transition('false <=> true', animate(500))
- * ])
- * ```
- *
  * ### Using :increment and :decrement
  * In addition to the :enter and :leave transition aliases, the :increment and :decrement aliases
  * can be used to kick off a transition when a numeric value has increased or decreased in value.