fix(field)!: change compound attribute names to kebab-case

BREAKING_CHANGE: Attributes `hasstart` and `hasend` have been changed to `has-start` and `has-end` respectively.
PiperOrigin-RevId: 542626280

field/lib/field.ts

@@ -26,12 +26,12 @@ export class Field extends LitElement implements SurfacePositionTarget {
  /**
  * Whether or not the field has leading content.
  */
- @property({type: Boolean}) hasStart = false;
+ @property({type: Boolean, attribute: 'has-start'}) hasStart = false;
 
  /**
  * Whether or not the field has trailing content.
  */
- @property({type: Boolean}) hasEnd = false;
+ @property({type: Boolean, attribute: 'has-end'}) hasEnd = false;
 
  @state() private isAnimating = false;
  private labelAnimation?: Animation;

textfield/lib/text-field.ts

@@ -520,8 +520,8 @@ export abstract class TextField extends LitElement {
  ?disabled=${this.disabled}
  ?error=${this.hasError}
  ?focused=${this.focused}
- ?hasEnd=${this.hasTrailingIcon}
- ?hasStart=${this.hasLeadingIcon}
+ ?has-end=${this.hasTrailingIcon}
+ ?has-start=${this.hasLeadingIcon}
  .label=${this.label}
  ?populated=${!!this.value}
  ?required=${this.required}