[MM-44434] Introduced search for channel id's through system console. (#20259)

* Introduced search for channel id's

* Small fix to test case as it is not looking at count

* Introduced searching channels by id as a ChannelOpt. Defaulting to true for system console for the time being

* go fmt

* Modified whether to include search by id by passing it in as prop to search endpoint. Modified webapp to pass through search by id as well

* Fixed issue with full text search, as there is not always necessarily an index on Id.

* Modified test to verify count, and moved code inside conditional

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/channel.go

@@ -123,6 +123,7 @@ type ChannelModeratedRolesPatch struct {
 // ExcludeDefaultChannels will exclude the configured default channels (ex 'town-square' and 'off-topic').
 // IncludeDeleted will include channel records where DeleteAt != 0.
 // ExcludeChannelNames will exclude channels from the results by name.
+// IncludeSearchById will include searching matches against channel IDs in the results
 // Paginate whether to paginate the results.
 // Page page requested, if results are paginated.
 // PerPage number of results per page, if paginated.
@@ -139,6 +140,7 @@ type ChannelSearchOpts struct {
 	PolicyID                 string
 	ExcludePolicyConstrained bool
 	IncludePolicyID          bool
+	IncludeSearchById        bool
 	Public                   bool
 	Private                  bool
 	Page                     *int

model/channel_search.go

@@ -16,6 +16,7 @@ type ChannelSearch struct {
 	Public                   bool     `json:"public"`
 	Private                  bool     `json:"private"`
 	IncludeDeleted           bool     `json:"include_deleted"`
+	IncludeSearchById        bool     `json:"include_search_by_id"`
 	Deleted                  bool     `json:"deleted"`
 	Page                     *int     `json:"page,omitempty"`
 	PerPage                  *int     `json:"per_page,omitempty"`