fix: fix issue where breakpoint srcset_options weren't being used

[Talljoe]

Description

When setting srcset_options on a breakpoint it was not being used by Tag::srcset instead defaulting
to the generic srcset_options (if provided). This change makes srcset used the options passed
to the method instead of the class-instance variables.

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[commit-lint]

Bug Fixes

• fix issue where breakpoit srcset_options weren't being used (5a446af)

Contributors

Talljoe

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[jtarchie]

This may not be the only place. This line also implies the srcset will always be overridden, right?