Components: Normalize dimensions and font sizes about mudblazor

[danielchalmers]

The sizes in the ToggleGroup were changed in #8676 and @henon suggested staking them to the Button sizes for consistency. I said we should explore changing both to a new standard to improve the quality. This issue was opened to let us discuss this idea in a wider context. We need to at least make a decision on the Button and ToggleGroup sizes before v7 is released.

cc @Garderoben @mckaragoz @ScarletKuro @Mr-Technician

[henon]

I am all for standardization of sizes. Currently the elements feel like a zoo if you align them next to each other ;).

Off-Topic: Maybe in the process we could aslo finally center the button text vertically. Currently it is slightly off-center (due to the font underline??) which is funny as the button caption is all capitalized. And even if it weren't, it would still look better were it perfectly centered.

[henon]

Yes of course the component dimensions will have to shrink accordingly

[danielchalmers]

We need to consider font sizes as well. Button and ToggleGroup (for example) should have the same dimensions AND text size. What does it look like in Material Design 2? That's what we should aim for.

[danielchalmers]

The reason some controls look vertically offset is probably due to the excessive line height in the default typographies:

M2

[danielchalmers]

@henon Just to confirm, if the density changes then the dimensions will change with it? Ex: Button 36px, Button Low Margin 34px #8946