fix: CXINT-2321 and CXINT-2322 (#17766)

[SherwinVarghese]

• Fixes https://jira.tools.sap/browse/CXINT-2321 and https://jira.tools.sap/browse/CXINT-2322
• Added date validation logic to handle textual inputs
• Only valid future dates are sent to the OCC APIs
• Fixed issue with clear button defaulting to the previous date

E2ES pasing

Unit tests passing

=============================== Coverage summary ===============================
Statements   : 92.7% ( 89/96 )
Branches     : 85.71% ( 36/42 )
Functions    : 89.47% ( 34/38 )
Lines        : 92.47% ( 86/93 )
================================================================================

[Matejk00]

#17766 (comment)

[cypress]

5 flaky tests on run #41296 ↗︎

0

119

2

0

5

Details:

Merge 645513f into 4b7e907...
Project: spartacus	Commit: ead472c5ed ℹ️
Status: Passed	Duration: 07:14 💡
Started: Aug 24, 2023 5:41 AM	Ended: Aug 24, 2023 5:49 AM

  regression/asm/asm.deeplink.core-e2e.cy.ts • 1 flaky test • B2C

View Output Video

Test		Artifacts
Assisted Service Module > Customer Support Agent - Emulation&deeplink > should emulate customer and navigate to saved cart with deeplink before agent login (CXSPA-3263)		Output Screenshots

  b2b/regression/asm/asm.core-e2e.cy.ts • 1 flaky test • B2B

View Output Video

Test		Artifacts
B2B - Assisted Service Module > Powertools Site > should fetch cost centers based on the emulated user's role		Output Screenshots

  ssr/pages.core-e2e.cy.ts • 3 flaky tests • SSR

View Output Video

Test		Artifacts
SSR > should render homepage		Output Screenshots
SSR > should render PLP		Output Screenshots
SSR > should render PDP		Output Screenshots

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}