Fix recorder run history during schema migration and startup

[bdraco]

Proposed change

RunHistory.get and RunHistory.current can be called before RunHistory.start. We need to return a RecorderRuns object with the start time that will be used when start it called to ensure history queries still work as expected.

fixes #87112

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
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• This PR fixes or closes issue: fixes #
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[home-assistant]

Hey there @home-assistant/core, mind taking a look at this pull request as it has been labeled with an integration (recorder) you are listed as a code owner for? Thanks!

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