Fix vm.Slider and vm.RangeSlider to work with incorrect textual input

[petar-qb]

Description

Fixed vm.Slider and vm.RangeSlider to work with incorrect text input.

Screenshot

Example on the main branch:
https://github.com/mckinsey/vizro/assets/108530920/455e6d69-beb3-43d5-a4b4-50eef5900f94

Example on the bugs/fix_sliders_incorrect_input branch:
https://github.com/mckinsey/vizro/assets/108530920/bf884f34-ec3e-4d9a-bfec-80b399229745

Checklist

• I have not referenced individuals, products or companies in any commits, directly or indirectly
• I have not added data or restricted code in any commits, directly or indirectly
• I have updated the docstring of any public function/class/model changed
• I have added tests to cover my changes (if applicable)

Types of changes

• Docs/refactoring (non-breaking change which improves codebase)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Notice

• I acknowledge and agree that, by checking this box and clicking "Submit Pull Request":

  • I submit this contribution under the Apache 2.0 license and represent that I am entitled to do so on behalf of myself, my employer, or relevant third parties, as applicable.
  • I certify that (a) this contribution is my original creation and / or (b) to the extent it is not my original creation, I am authorized to submit this contribution on behalf of the original creator(s) or their licensees.
  • I certify that the use of this contribution as authorized by the Apache 2.0 license does not violate the intellectual property rights of anyone else.

[antonymilne]

Thanks for the quick fix 🙏