feat(manager/asdf): support channel suffix on asdf-flutter

[ronnnnn]

Changes

Support channel suffix on asdf-flutter.

Context

asdf-flutter manages versions of flutter with channel suffix like below.

$ asdf list-all flutter
...
3.7.12-stable
3.10.0-1.4.pre-beta
3.10.0-1.5.pre-beta
3.10.0-stable
3.11.0-0.0.pre-beta

We can install flutter without channel via asdf-flutter.
However, there is a issue that behavior of installing specific version without channel is unstable.
asdf-community/asdf-flutter#43

Therefore, I want to support upgrading with channel suffix.

Related PR: #20786

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[viceice]

please test on a real repo

[ronnnnn]

I tested on my repo and worked as I expected.

[renovate-release]

🎉 This PR is included in version 35.91.0 🎉

The release is available on:

• GitHub release
• 35.91.0

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