fix: summary string transformations format (#7221)

[hip3r]

Summary

allow empty spaces in Summary String Transformations closes #7221

Test plan summary: "{{ title | upper }} / {{ title | lower }} / {{ title | truncate(1) }} / {{ nonexistant | default('Hello') }} / {{ mytruth | ternary('Yep','Nope') }} / {{ date | date('YYYY') }}"

BEFORE: / / / / /

AFTER: TITLE / title / t... / Hello / Yep / 2024

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