feat(gov): support v1.Proposal in v1beta1.Proposal.Content

[clevinson]

Description

As discussed in regen-network/governance#16, this PR back ports a fix from @robert-zaremba into Regen's for of the SDK v0.46.7.

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[clevinson]

@robert-zaremba why did you suggest merge instead of cherry pick of e7dd5e0bdc8aabadb0d4ae13bdb143f92c1cdf4c ?

This strategy adds in 3 other commits besides the one in question. Are these necessary for the gov PR?

• fix(store): Fix the TestFileStreamingService unit test. (backport #14305) cosmos/cosmos-sdk#14309
• fix: return anteEvents when postHandler fail (backport #14448) cosmos/cosmos-sdk#14459
• feat!: remove x/gov/migrations/v046.Migrate_V046_6_To_V046_7 cosmos/cosmos-sdk#14422

[ryanchristo]

utACK

[robert-zaremba]

utACK

[robert-zaremba]

why did you suggest merge instead of cherry pick of e7dd5e0

You need e641907, which a second commit after 0.46.7
e7dd5e0 contains additional ante handler fix.
Once 0.46.8 will be released you can do a again a normal merge - it will look cleaner when you do linear merges.

[ryanchristo]

tACK