Update invoice template to be (mostly) previewable

[eileenmcnaughton]

Overview

Switch line items in invoice template to previewable

This is part of standardising contribution templates so that

• they are decoupled from the form layer and do not rely on form-layer assigns
• they use consistent, standard variables
• they work in preview

Before

• preview does not work
• $lineItem array variable is used - this is assigned by the form & has an extra 'layer' to iterate through but is otherwise the sames as $lineItems which the WorkflowTemplate class makes available
• $taxTerm is used - we are moving to tokens where possible so {domain.tax_term}
• $dataArray is used - we are moving to the $taxRateBreakdown - which has a clearer name & more logical structure

Below output is from generating a pdf & almost no change should happen from this PR - the exception is the dataArray section just seemed wrong on the 'before' so I removed the second line in it

• ie saying Sales Tax 0 in the above seems weird

For refunded a credit note section is appended

After

The relevant preview part now works - with gaps which will later be filled with tokens from #24118

Technical Details

Once the main parts of the template are swapped we will push a template update & we can, in time, start to remove assignment complexity from the form layer

Comments

[civibot]

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[eileenmcnaughton]

I just added an example to add in the credit note part too

[eileenmcnaughton]

@demeritcowboy if you get a chance could you take a look at this - it is similar to the changes in the offline contribution template

[demeritcowboy]

Ok I'll try to fit it in somewhere.

[demeritcowboy]

As noted in the description the preview is missing some output, so ok. It's there in the pdf.

But also the logo doesn't seem to display in the preview but it's ok in the pdf.

Otherwise I just have the same UX complaints as before:

• It should be using my site's config for what choices to preview.
• If you didn't know there was a preview feature, you might not see it. Even knowing, it takes a while to find it. It should just be a button like the other buttons.

Resulting pdfs look ok. It ignores the tax display setting you have at contribute component settings, but it did that before.

[eileenmcnaughton]

@demeritcowboy can you put those UI things in gitlab - I'm not really processing them right now but would like to come back to them

[eileenmcnaughton]

oh for the logo there is another PR #24102