Handle dyno name parsing for Fir apps

[sbosio]

Description

Here we introduce changes to correctly parse dyno names for both Cedar & Fir generation apps, updating requests to use the 3.sdk variant.

SOC2

GUS Work Item

[eablack]

Noticed some unexpected behavior with this change. Or, at least, it doesn't fix something that doesn't work with fir. For apps with multiple process types, it isn't grouping them correctly, as shown here (in the below example, go-getting started is a fir app with both web and worker dynos while repositories-api-production is a cedar app):

Also, I think there's another spot we need to address dyno name parsing:
https://github.com/heroku/cli/blob/prerelease/10.0.0-alpha/packages/cli/src/commands/spaces/ps.ts#L7

[eablack]

For apps with multiple process types, it isn't grouping them correctly,

i take this back, i had worker dynos set to 0. it is grouping the two different web dynos together and not labeling it as web but i don't think that has to do with fir. anyway, i think if we just address the other processNum parsing function, we're good.

[sbosio]

For apps with multiple process types, it isn't grouping them correctly,

i take this back, i had worker dynos set to 0. it is grouping the two different web dynos together and not labeling it as web but i don't think that has to do with fir. anyway, i think if we just address the other processNum parsing function, we're good.

Yeah, I see. I know where the issue might be, I'll provide a fix for this.