Removed 'nullable' attribute of BranchAdvancedLogCallback param#1474

NidhiDixit09 merged 1 commit intomasterBranchMetrics/ios-branch-deep-linking-attribution:masterfrom

SDK-2537-Fix-EnableLogging-Compilation-ErrorBranchMetrics/ios-branch-deep-linking-attribution:SDK-2537-Fix-EnableLogging-Compilation-ErrorCopy head branch name to clipboard