Sometimes state not rerendering when switching between pages

[nathan-gs]

          I might have figured this out.

Adding this.firstRenderWithMap = true; to e.g. place where this.map.remove(); is done, seems to fix the issue.

Originally posted by @Hiekkaharju in https://github.com/nathan-gs/ha-map-card/issues/29#issuecomment-2121126767

[nathan-gs]

Implemented in v0.9.0