Deprecations for styles v9

[gfellerph]

This ticket lists all deprecations or breaking changes for @swisspost/design-system-styles v7.

Deprecated

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1. Styles: Deprecate alert-error and alert-notification #825
   📦 styles +1
   
2. Mark utilities as deprecated #952
   📦 styles +1
   
3. Styles: deprecate the icons #1096
   📦 demo 📦 styles +2
   
4. Deprecate current sizing/spacing variable names #1248
   📦 styles +1
   
5. Update line heights #1194
   4 of 4
   📦 styles +1
   
6. Update heading size #1294
   1 of 1
   🐞 bug 📦 styles +2
   
7. fix(header): deprecate stickyness full #1551
   +0
8. Clean up alert/toast styles #352
   🐞 bug 📦 styles +2
   
9. Missing calendar icon with named icon #1785
   🐞 bug 📦 demo 📦 styles +3
   
10. chore: deprecating size variants for text input, textarea and select #1837
    +0
11. chore(styles, docs): re-apply mask icon changes #1945
    +0
12. Deprecate dismissible HTML alerts #2014
    pibs 📦 styles +2
    
13. chore: update grid behavior #2045
    +0
14. Deprecate grid container helper classes #2041
    5 of 5
    pibs 📦 styles +2
    
15. Deprecate grid-system rg breakpoint #2096
    pibs 📦 styles +2
16. Deprecate current Badge #2196
    pibs 📦 styles +2
    
17. Deprecate accent colors #2863
    2 of 2
    📦 styles +1
    
18. Deprecate Portal components #2889
    0 of 2
    📦 documentation +1
    
19. Deprecate accent color buttons #3045
    📦 styles +1

Breaking changes

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1. Add new sizing variables #1195
   4 of 6
   needs: discussion 💔 breaking 📦 styles 🦌 fair game +4
   
2. Remove deprecated form-checks variables #2016
   0 of 1
   good first issue 💔 breaking 📦 styles +3
   
3. Remove regular breakpoint #2032
   1 of 5
   💔 breaking 📦 styles +2
   
4. Styles: Remove alert-error and alert-notification #826
   💔 breaking 📦 styles +2
5. Replace usage of old variables where identical #1274
   💔 breaking 📦 styles 🦌 fair game +3
   
6. Remove deprecated font-size variables #1301
   0 of 4
   good first issue 💔 breaking 📦 styles +3
7. Remove deprecated display-size variables #1302
   1 of 2
   good first issue 💔 breaking 📦 styles +3
   
8. Remove deprecated line-height-calc function #1303
   1 of 3
   good first issue 💔 breaking 📦 styles +3
   
9. Remove deprecated valid and invalid tooltip styles #1304
   2 of 4
   good first issue 💔 breaking 📦 styles +3
   
10. Remove deprecated line-height variables #1305
    4 of 5
    good first issue 💔 breaking 📦 styles +3
    
11. Remove deprecated datatable variables #1991
    0 of 1
    good first issue 💔 breaking 📦 styles +3
    
12. Remove deprecated stepper variables #1992
    0 of 1
    good first issue 💔 breaking 📦 styles +3
    
13. Styles: placeholders remove unused placeholders from _text.scss #2202
    good first issue 💔 breaking 📦 styles +3
    
14. Reduce textarea size variants to two #2224
    💔 breaking 📦 styles 🦌 fair game +3
15. Update text input size variants to two #2225
    💔 breaking 📦 styles 🦌 fair game +3
16. Update select size variants to two #2226
    💔 breaking 📦 styles 🦌 fair game +3
17. Remove grid container helper classes #2399
    5 of 7
    good first issue 💔 breaking 📦 styles +3
    
18. Simplify the horizontal stepper styles #3090
    💔 breaking 📦 styles +2
19. Make the heading level property required #3091
    0 of 1
    💔 breaking 📦 components +2
    
20. Remove deprecated accent colors #3227
    1 of 1
    💔 breaking 📦 styles +2
    
21. Update tab styles #1655
    2 of 3
    💔 breaking 📦 styles 🦌 fair game +3
22. chore(styles, documentation): remove usage of deprecated utility sizing classes #4343
    +0

[gfellerph]

Closing as done (parent issue).