Backport to 2022.02.xx ref to PR 9686

[mumairr]

Description

Please check if the PR fulfills these requirements

• The commit message follows our guidelines: https://github.com/geosolutions-it/MapStore2/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x", remove the others)

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Issue

#9686

What is the new behavior?

When passing custom fonts, an object with unique identifier is passed to check & restrict duplicate entries inside GeoStory plugin in edit mode

Breaking change

Does this PR introduce a breaking change? (check one with "x", remove the other)

• Yes, and I documented them in migration notes
• No

Other useful information

Provides backport support for version 2022.02.xx

Issue was only reproducible on Geonode MapStore Client due to async loading of GeoStory component

Custom fonts should be added to localconfig under GeoStory -> cfg:
{
"name": "GeoStory",
"cfg": {
"fontFamilies": [
{
"family": "Arial"
},
{
"family": "Georgia"
},
{
"family": "Impact"
},
{
"family": "Tahoma"
},
{
"family": "Times New Roman"
},
{
"family": "Titillium Web",
"src": "https://fonts.googleapis.com/css2?family=Titillium+Web"
},
{
"family": "Verdana"
}
]
}
}