Button - Fluent Theme - When theme is applied, button does not look like a fluent button

[brianlagunas]

Description

When the fluent theme is applied, the button component does not look like a fluent button.

Here is what a default fluent button looks like

Here is what the igc-button looks like when the fluent theme is applied

Steps to reproduce

1. Run story board
2. Apply fluent theme
3. Observe the button

Result

The button looks nothing like a fluent button

Expected result

The button needs to look like a fluent button