ref: SDK internal Tag handling

[bitsandfoxes]

First iteration

OLD:
|                  Method | SpanCount |        Mean |        Error |    StdDev |     Gen0 |     Gen1 |  Allocated |
|------------------------ |---------- |------------:|-------------:|----------:|---------:|---------:|-----------:|
| 'Creates a Transaction' |         1 |    18.74 us |     9.389 us |  0.515 us |   1.9531 |   0.7324 |   11.45 KB |
| 'Creates a Transaction' |        10 |    46.50 us |    10.036 us |  0.550 us |   5.1270 |   1.8921 |   29.41 KB |
| 'Creates a Transaction' |       100 |   328.92 us |   391.109 us | 21.438 us |  36.6211 |  13.1836 |  209.87 KB |
| 'Creates a Transaction' |      1000 | 3,126.71 us | 1,627.935 us | 89.233 us | 343.7500 | 121.0938 | 2010.25 KB |

NEW:
|                  Method | SpanCount |        Mean |        Error |     StdDev |     Gen0 |    Gen1 |  Allocated |
|------------------------ |---------- |------------:|-------------:|-----------:|---------:|--------:|-----------:|
| 'Creates a Transaction' |         1 |    16.71 us |     5.680 us |   0.311 us |   2.9907 |  0.9766 |   10.64 KB |
| 'Creates a Transaction' |        10 |    40.69 us |    49.539 us |   2.715 us |   3.7231 |  1.4038 |   21.28 KB |
| 'Creates a Transaction' |       100 |   233.04 us |   140.121 us |   7.680 us |  28.3203 |  8.7891 |  128.62 KB |
| 'Creates a Transaction' |      1000 | 2,260.93 us | 2,510.363 us | 137.601 us | 253.9063 | 82.0313 | 1197.68 KB |

[github-actions]

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## Unreleased

- SDK internal Tag handling ([#2621](https://github.com/getsentry/sentry-dotnet/pull/2621))

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Generated by 🚫 dangerJS against b4a8ce6

[bruno-garcia]

Do we need this method now that we have InternalTags again?

Suggested change

	public static IReadOnlyDictionary<string, string>? GetTagsOrNull(this IHasTags hasTags)
	internal static IReadOnlyDictionary<string, string>? GetTagsOrNull(this IHasTags hasTags)

[bitsandfoxes]

Superseded by #2636