fix: remove "pointer-events: none" from disabled form controls

[dmitry-stepanenko]

Related Issue

Closes SAP/fundamental-ngx#7246

Description

In the textarea, we could have several lines. If the component is disabled, then it is not more possible to scroll through the lines.

This PR removes "pointer-events: none" from form controls at all. Preserving it on "select" component, as the button handle should not be clickable

Screenshots

NOTE: If you've made any style changes, please provide appropriate screenshots (before and after) to help reviewers.

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Before:

After:

Please check whether the PR fulfills the following requirements

1. The output matches the design specs

• All values are in rem
• Text elements follow the truncation rules
• hover state of the element follow design spec
• focus state of the element follow design spec
• active state of the element follow design spec
• selected state of the element follow design spec
• selected hover state of the element follow design spec
• pressed state of the element follow design spec
• Responsiveness rules - the component has modifier classes for all breakpoints
• Includes Compact/Cosy/Tablet design
• RTL support

2. The code follows fundamental-styles code standards and style

• only one top level fd-* class is used in the file
• BEM naming convention is used
• Mixins are used for repeatable code (fd-rtl, fd-ellipsis, fd-flex, fd-selected, fd-focus, ect.)
• A11y support - keyboard support, screenreader support, proper ARIA attributes, etc.
• fd-reset() mixin is applied to all elements
• Variables are used, if some value is used more than twice.
• Checked if current components can be reused, instead of having new code.

3. Testing

• tested Storybook examples with "CSS Resources" normalize option
• tested Storybook examples with "CSS Resources" unnormalize option
• [n/a] Verified all styles in IE11
• [n/a] Updated tests
• last commit message should have [ci visual] so it can trigger chromatic visual regression (e.g. test: run chromatic visual regression [ci visual])

4. Documentation

• [n/a] Storybook documentation has been created/updated
• [n/a] Breaking Changes wiki has been updated in case of breaking changes.

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