GetMap format list in GetCapabilities not respected

[tdipisa]

Description

From georchestra/mapstore2-georchestra#301

whatever the server says in the getcapabilities, it seems mapstore hardcodes the image format list in several places:

• https://github.com/geosolutions-it/MapStore2/blob/master/web/client/components/background/BackgroundDialog.jsx#L66
• https://github.com/geosolutions-it/MapStore2/blob/master/web/client/components/catalog/Catalog.jsx#L115
• https://github.com/geosolutions-it/MapStore2/blob/master/web/client/plugins/MetadataExplorer.jsx#L126
• https://github.com/geosolutions-it/MapStore2/blob/master/web/client/utils/TMSUtils.js#L10
• https://github.com/geosolutions-it/MapStore2/blob/master/web/client/components/TOC/fragments/settings/Display.jsx#L116

i know (from the doc in https://github.com/geosolutions-it/MapStore2/blob/master/docs/user-guide/catalog.md#advanced-settings-1) that one can configure that per catalog service (well, in the UI one can only remove some formats from the 'default list', but i guess in the .js its configurable more finely), and i guess this hardcoded list comes from the default formats supported by geoserver (which mapstore2 is developed/tested against, other servers being less tested..) but could we at least prune the list from the formats not listed in the servers' GetCapabilities ?

for example mapserver has this:

<GetMap>
<Format>image/png</Format>
<Format>image/jpeg</Format>
<Format>image/png; mode=8bit</Format>
<Format>image/vnd.jpeg-png</Format>
<Format>image/vnd.jpeg-png8</Format>
<Format>application/x-pdf</Format>
<Format>image/svg+xml</Format>
<Format>image/tiff</Format>
<Format>application/vnd.google-earth.kml+xml</Format>
<Format>application/vnd.google-earth.kmz</Format>
<Format>application/x-protobuf</Format>
<Format>application/json</Format>

so in the mapstore UI if one selects image/gif or image/png8 the layer breaks.

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

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1. wms catalog entry doesnt list all available getmap formats #8906
   Accepted C276-CRAIG-2023-DEV bug +3