[NFC] php8 assign formTpl in HookTest test

[demeritcowboy]

Overview

On my local the pagerun test passes fine and the buildform one fails but with a different smarty var, so I'm not sure what's different. Possibly it matters if you run the whole suite vs just the file but then that implies there's another problem somewhere - 🤷

Let's see what happens here.

[civibot]

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[seamuslee001]

test fail unrelated

[demeritcowboy]

Yay down to one!

I can't get that last test to fail on my local, but I'll push up a theoretical fix.

[seamuslee001]

@demeritcowboy beat ya to it on the theoretical fix #22065

[demeritcowboy]

Hehe cool.