(feat) O3-2755: Use snackbar notification in allergies app

[njiddasalifu]

Requirements

• This PR has a title that briefly describes the work done including the ticket number.
• My work conforms to the OpenMRS 3.0 Styleguide and design documentation.
• My work is validated by existing tests.

Summary

replacing toast notification to use new snackbar

Screenshots

Related Issue

https://openmrs.atlassian.net/browse/O3-2755

[njiddasalifu]

Hey, @denniskigen @hadijahkyampeire kindly on your free time review this PR.

[Vijaykv5]

LGTM

[sherrif10]

Do you still need import

"showToast"

?. You might want to fix issues related with CI

[njiddasalifu]

Do you still need import

"showToast"

?. You might want to fix issues related with CI

thanks for the catch. We dont need the showToast again as its replaced by the showSnackbar which is consistent among other apps. What i am still having doubt is the fix to the failing tests in the CI.

[sherrif10]

After making any change, First run this command yarn lint --fix to fix lint then run lint verify, then push again. i think this will fix CI

[njiddasalifu]

thanks for the review @denniskigen, @sherrif10 and @Vijaykv5

[denniskigen]

Thanks, @njiddasalifu.