[BUG]fix suggestion list cutoff issue (#2607) (#2644)

In this PR, we fixed the suggestion list cutoff in an easy way.
We remove width 250px and add block display to allow browser to
select a width and add ellipsis at the bottom.

However, we might have longer input that can't fit into the search.
When we truncate the search, the elements look the same which might
be still an issue for customer usage. We definitely need more
feedbacks on the cutoff behavior.

Issue resolved:
#2555

Signed-off-by: Anan Zhuang <ananzh@amazon.com>

Signed-off-by: Anan Zhuang <ananzh@amazon.com>
(cherry picked from commit 195cc8e)

Co-authored-by: Anan Zhuang <ananzh@amazon.com>

CHANGELOG.md

@@ -40,6 +40,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * [MD] Add data source param to low-level search call in Discover ([#2431](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2431))
 * [Multi DataSource] Skip data source view in index pattern step when pick default ([#2574](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2574))
 * [Multi DataSource] Address UX comments on Edit Data source page ([#2629](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2629))
+* [BUG] Fix suggestion list cutoff issue ([#2607](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2607))
 * [Multi DataSource] Address UX comments on index pattern management stack ([#2611](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2611))
 * [Multi DataSource] Apply get indices error handling in step index pattern ([#2652](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2652))
 
@@ -88,6 +89,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * [Viz Builder] Fixes time series for new chart types ([#2309](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2309))
 * [Viz Builder] Add index pattern info when loading embeddable ([#2363](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2363))
 * Fixes management app breadcrumb error ([#2344](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2344))
+* [BUG] Fix suggestion list cutoff issue ([#2607](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/2607))
 
 ### 🚞 Infrastructure
 

src/plugins/data/public/ui/typeahead/_suggestion.scss

@@ -144,7 +144,7 @@ $osdTypeaheadTypes: (
   flex-grow: 0; /* 2 */
   flex-basis: auto; /* 2 */
   font-family: $euiCodeFontFamily;
-  width: 250px;
+  display: block;
   overflow: hidden;
   text-overflow: ellipsis;
   padding: $euiSizeXS $euiSizeS;