Pwa 2780 remove increment decrement tab selection

[Sahilsks]

Description

Remove increase/decrease buttons of quantity selector from the tab index

Related Issue

Closes #3766

Acceptance

Verification Stakeholders

Specification

Verification Steps

Test scenario(s) for direct fix/feature

Test scenario(s) for any existing impacted features/areas

Test scenario(s) for any Magento Backend Supported Configurations

Is Browser/Device testing needed?

Any ad-hoc/edge case scenarios that need to be considered?

Screenshots / Screen Captures (if appropriate)

https://user-images.githubusercontent.com/86670457/223668422-cc0fd3c6-ae26-4234-91ef-57d9af0ec316.mov

Breaking Changes (if any)

Checklist

• I have added tests to cover my changes, if necessary.
• I have added translations for new strings, if necessary.
• I have updated the documentation accordingly, if necessary.

[pwa-studio-bot]

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[haal9000]

run pr-deploy

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Successfully started codebuild job for pr-deploy

[haal9000]

run pr-deploy

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Successfully started codebuild job for pr-deploy

[glo82145]

As associated ticket with this PR is closed. hence closing this PR.