MM-52487: fix more playbooks tests (#23475)

* fix playbooks/channels/rhs/template_spec.js

* fix playbooks/channels/update_request_post_spec.js

* fix playbooks/runs/rdp_rhs_runinfo_spec.js

* fix playbooks/runs/rdp_rhs_statusupdates_spec.js

* remove enableexperimentalfeatures flag in e2e tests

* rdp_main_header_spec: simplify channel loaded assertion

* playbooks rhs participants: fix infinite fetch loop

* improved onboarding skipping

* simplify participants fetching

e2e-tests/cypress/tests/integration/playbooks/channels/rhs/template_spec.js

@@ -34,10 +34,6 @@ describe('channels > rhs > template', {testIsolation: true}, () => {
                 // # Switch to playbooks DM channel
                 cy.visit(`/${team1.name}/messages/@playbooks`);
 
-                // * Checking the bot badge as an indicator of page
-                // * stability / rendering finished
-                cy.findByText('BOT').should('be.visible');
-
                 // # Open playbooks RHS.
                 cy.getPlaybooksAppBarIcon().should('be.visible').click();
 
@@ -58,10 +54,6 @@ describe('channels > rhs > template', {testIsolation: true}, () => {
                 // # Switch to playbooks DM channel
                 cy.visit(`/${team1.name}/messages/@playbooks`);
 
-                // * Checking the bot badge as an indicator of page
-                // * stability / rendering finished
-                cy.findByText('BOT').should('be.visible');
-
                 // # Open playbooks RHS.
                 cy.getPlaybooksAppBarIcon().should('be.visible').click();