fix(dev-infra): correct FormatConfig interface (#42154)
fix(dev-infra): correct FormatConfig interface (#42154)

Correct the FormatConfig interface to use `[key: string]` instead of the incorrect
`[keyof: string]`.

PR Close #42154

gnomeontherun/angular,brandonroberts/angular,brandonroberts/angular,ocombe/angular,gnomeontherun/angular,angular-indonesia/angular,angular/angular,manekinekko/angular,gkalpak/angular,gnomeontherun/angular,gkalpak/angular,brandonroberts/angular,mgechev/angular,angular/angular,shairez/angular,ocombe/angular,ocombe/angular,angular/angular,manekinekko/angular,shairez/angular,brandonroberts/angular,ocombe/angular,gnomeontherun/angular,angular-indonesia/angular,mgechev/angular,mgechev/angular,shairez/angular,manekinekko/angular,ocombe/angular,shairez/angular,brandonroberts/angular,brandonroberts/angular,JiaLiPassion/angular,gkalpak/angular,JiaLiPassion/angular,mgechev/angular,JiaLiPassion/angular,angular-indonesia/angular,ocombe/angular,angular/angular,manekinekko/angular,manekinekko/angular,angular-indonesia/angular,mgechev/angular,JiaLiPassion/angular,manekinekko/angular,gkalpak/angular,shairez/angular