Fix typo handleLowModePowerChange -> handleLowPowerModeChange
Pull request: https://github.com/WebKit/WebKit/pull/17678
Committed 267898@main (501318a01eda): <https://commits.webkit.org/267898@main> Reviewed commits have been landed. Closing PR #17678 and removing active labels.
<rdar://problem/115350694>