message: Minor simplification in path label placement.
  Remove unnecessary call to checkStartFadeIn. Preparation to delete
  checkStartFadeIn and checkStartFadeOut methods.
diff: @@ -2068,25 +2068,12 @@ export class TextElementsRenderer {
  }
  }
  - // Fade-in after skipping rendering during movement.
  - // NOTE: Shouldn't this only happen once we know the label is gonna be visible?
  - if (
  - labelState.textRenderState!.isUndefined() ||
  - labelState.textRenderState!.lastFrameNumber < this.m_viewState.frameNumber - 1
  - ) {
  - labelState.textRenderState!.startFadeIn(
  - this.m_viewState.frameNumber,
  - renderParams.time
  - );
  - }
  - const startedFadeIn = labelState.textRenderState!.checkStartFadeIn(
  - this.m_viewState.frameNumber,
  - renderParams.time
  - );
  + labelState.textRenderState!.startFadeIn(this.m_viewState.frameNumber, renderParams.time);
  + labelState.textRenderState!.lastFrameNumber = this.m_viewState.frameNumber;
  - renderParams.fadeAnimationRunning = renderParams.fadeAnimationRunning || startedFadeIn;
  if (labelState.textRenderState!.isFading()) {
  opacity = labelState.textRenderState!.opacity * pathLabel.renderStyle!.opacity;
  + renderParams.fadeAnimationRunning = true;
  }
  const prevOpacity = textCanvas.textRenderStyle.opacity;
  