Modernize method binding patterns across the codebase

[williamsyang-work]

Description:

Our codebase contains legacy method binding patterns that add unnecessary complexity. These patterns, likely originating from Java development practices, include method delegation and explicit .bind(this) usage. Since we're using TypeScript with arrow functions, these binding patterns are redundant and can be safely removed.
Current patterns we want to modernize:

// Pattern 1: Method delegation
private onEventHandler = (data: Type) => this.doHandleEvent(data);
private doHandleEvent(data: Type) { }

// Pattern 2: Explicit binding
private onEventHandler = function(data: Type) {
    // implementation
}.bind(this);

Proposed modern approach:

// Clean arrow function implementation
private onEventHandler = (data: Type) => {
    // implementation
}

Implementation Strategy:

Individual PRs will target specific modules or related components
Each PR will be tagged with this issue for tracking
Changes will be purely structural with no functional modifications
Existing tests will validate that behavior remains unchanged

Success Criteria:

All method delegation patterns replaced with direct arrow function implementations
All explicit .bind(this) calls removed where arrow functions are used
No regression in functionality
Improved code readability and reduced complexity

This modernization effort will help align our codebase with current TypeScript and React best practices while making it more maintainable for the team.
Labels: technical-debt, enhancement, cleanup