fix(icons): set Sistent icons to be filled by default using currentColor

[KSNauman]

Notes for Reviewers
this was the only best way i found out by changing the DEFAULT_FILL_NONE = "none" to DEFAULT_FILL_NONE="currentcolor"
This PR fixes #663

Signed commits

• Yes, I signed my commits.

[Rajesh-Nagarajan-11]

To add your Signed-off-by line to every commit in this branch:

1. Ensure you have a local copy of your branch by checking out the pull request locally via command line.
2. In your local branch, run: git rebase HEAD~1 --signoff
3. Force push your changes to overwrite the branch: git push --force-with-lease origin defaultIcon/nauman/663

[saurabhraghuvanshii]

Can you attach screenshot of changes

[KSNauman]

yeah sure

[saurabhraghuvanshii]

@KSNauman also attach before changes Screenshot

[KSNauman]

Before :
When icons were used with the default fill="none", they were rendered but not visible .

After : After updating the default fill to currentColor, the same icons render correctly

[kishore08-07]

@KSNauman
Thank you for your contribution!
Let's discuss this during the website call today at 6:30 PM IST | 8 AM CT
Add it as an agenda item to the meeting minutes, if you would :)

[Rajesh-Nagarajan-11]

@KSNauman Thanks