Circular Progress: Add aria hidden to svg to avoid error in arc toolkit

[lasseklovstad]

Added aria hidden to svg.

Description

Related Issue(s)

• 303

Verification

• [x] Your code builds clean without any errors or warnings
• [x] Manual testing done (required)
• [x] Relevant automated test added (if you find this hard, leave it and we'll help out)
• [x] All tests run green

Documentation

• [x] User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (bcac3d8) 88.87% compared to head (e5f4bcb) 88.87%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #304 +/- ## ======================================= Coverage 88.87% 88.87% ======================================= Files 83 83 Lines 1204 1204 Branches 381 381 ======================================= Hits 1070 1070 Misses 125 125 Partials 9 9 ``` | [Impacted Files](https://app.codecov.io/gh/Altinn/altinn-design-system/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Altinn) | Coverage Δ | | |---|---|---| | [...c/components/CircularProgress/CircularProgress.tsx](https://app.codecov.io/gh/Altinn/altinn-design-system/pull/304?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Altinn#diff-c3JjL2NvbXBvbmVudHMvQ2lyY3VsYXJQcm9ncmVzcy9DaXJjdWxhclByb2dyZXNzLnRzeA==) | `100.00% <ø> (ø)` | |

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