PB-818: Ensuring scales are respected on print - #patch

[ltkum]

Issue : When we were sending print requests, the scales of the symbols and texts in kmls were off. For icons, they were too small, and the texts were too big.

Fix : We corrected the scales for icons and labels. Icons used a DPI adaptation of * 90 / 254 which was inherited from the old mapviewer. After some empirical testing, it looks like on the new mapviewer needs a *150 / 254 DPI adaptation Labels were not using the 'scale' parameter for the fonts at all, and they now also use a 150 / 254 DPI adaptation.

It is important to note that the '254' given here is a computed value, as some layers will have smaller resolutions and their DPI will be used in those situations

Still To Do : Text alignment and offsets

Test link

[cypress[bot]]

web-mapviewer    Run #3283

Run Properties:   Passed #3283  •  f4e125cf46: PB-818: adapt unit tests

Project	web-mapviewer
Branch Review	bugfix-PB-818-font-and-image-size-dont-match-in-print
Run status	Passed #3283
Run duration	04m 52s
Commit	f4e125cf46: PB-818: adapt unit tests
Committer	Martin Künzi
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Test results
Failures	0
Flaky	0
Pending	21
Skipped	0
Passing	210
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