fix(thought-leadership): render display-title if it exists

[proeung]

Issue

Fixes - https://jira.sdlc.merative.com/browse/MERATIVE-806

Description

Changed

• This PR renders row['display-title'] if it exists and fallback to regular title row.title

Design Specs

• Figma Link - https://www.figma.com/file/dFJwrp6VkUMSirF2KMLRMx/Thought-leadership-library?type=design&node-id=787-25468&mode=design&t=pRNHGuEjJwkvu9Sy-0

Test URLs

• Before (Changes from feat/thought-leadership): https://feat-thought-leadership--merative2--hlxsites.hlx.page/thought-leadership

• After (Changes from this PR): https://fix-tl-display-title--merative2--proeung.hlx.page/thought-leadership

Testing Instruction

• Visit this page which includes changes from this PR (https://fix-tl-display-title--merative2--proeung.hlx.page/thought-leadership)
• Ensure that the Solutions filters are displaying the Display-Title value from the metadata instead of title.

[aem-code-sync[bot]]

Hello, I'm Franklin Bot and I will run some test suites that validate the page speed. In case there are problems, just click the checkbox below to rerun the respective action.

• [ ] Re-run PSI Checks

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/thought-leadership

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/thought-leadership

[proeung]

@keith-kaplan Thanks for testing this PR! I'm going to merge this down to our feature branch feat/thought-leadership, so that we have all of the code changes ready for the launch today!