Update ikea_e1812.yaml ZHA Mappings

[LewisSpring]

Fixes by @KentGitIvar

Proposed change*

Update button mappings for E1812

Checklist*

• I followed sections of the Contribution Guidelines relevant to changes I'm proposing.
• I properly tested proposed changes on my system and confirm that they are working as expected.
• I formatted files with Prettier using the command npm run format before submitting my Pull Request.

[LewisSpring]

Hi @KentGitIvar.

Please could you test the above blueprint before I merge it?
That would be massively appreciated!

Thank you!

[KentGitIvar]

Hi.
I have testet the blueprint and it works as it should.
Still missing dubble press but thats for the dru file I guess?

Tanks for the update!

Mvh Kent

[LewisSpring]

Double press is handled separately so won't be fixed by this specific change.
Thanks for testing!