`This condition will always return 'false'` (2367) error no longer appears on template literal types with keyword types

[DetachHead]

Bug Report

🔎 Search Terms

This condition will always return 'false'

🕗 Version & Regression Information

• This changed between versions 4.2.3 and 4.3.5

⏯ Playground Link

• not working in 4.4.0-dev.20210727
• working in 4.2.3

💻 Code

declare const foo: `foo${number}`
foo === 'bar' // no error even though types are incompatible

const bar: `foo${number}` = 'bar' //error: Type '"bar"' is not assignable to type '`foo${number}`'

🙁 Actual behavior

no error when comparing the incompatible types

🙂 Expected behavior

the same error that occurs when you do the same thing in typescript <=4.2.3

This condition will always return 'false' since the types '`foo${number}`' and '"bar"' have no overlap.(2367)

[DetachHead]

looks like this is fixed in 4.5 https://www.typescriptlang.org/play?ts=4.5.0-dev.20211002#code/CYUwxgNghgTiAEYD2A7AzgF3gMyUgXPAAa5IAkA3igK4C2ARiDAL5EBQp8AvD-AOT1YfeAHoR8JjCQx4+AJRs2ydFkExCJPJRoMmrbvzXCxk6YQAqATwAOCPgCI194QEs08FEixQ0aFwHMUKHoIBAwkeAwbO01yKjpGFiI+IA