Use same version of @theia dependencies in 'che-theia' and 'che-theia-endpoint-runtime'

[evidolob]

What does this PR do?

Use same version of @Theia dependencies in 'che-theia' and 'che-theia-endpoint-runtime'

Note: this fix for 7.0.0 branch, better solution should be after #13387

What issues does this PR fix or reference?

eclipse-che/che#14187

[benoitf]

Cleanup may occur in master branch

[evidolob]

During test @tolusha found:

{ Error: Cannot find module '/home/theia/node_modules/@eclipse-che/theia-plugin-ext/lib/plugin/node/che-api-node-provider.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.initExtApi (/home/theia/node_modules/@theia/plugin-ext/lib/hosted/node/plugin-host-rpc.js:208:50)
    at PluginManagerExtImpl.<anonymous> (/home/theia/node_modules/@theia/plugin-ext/lib/plugin/plugin-manager.js:137:39)
    at step (/home/theia/node_modules/@theia/plugin-ext/lib/plugin/plugin-manager.js:47:23)
    at Object.next (/home/theia/node_modules/@theia/plugin-ext/lib/plugin/plugin-manager.js:28:53)
    at /home/theia/node_modules/@theia/plugin-ext/lib/plugin/plugin-manager.js:22:71
    at new Promise (<anonymous>) code: 'MODULE_NOT_FOUND' }

Going to fix that error

[tolusha]

@evidolob
With the latest commit I haven't found any regressions.
Php, Go and Python plugins were tested.

[dmytro-ndp]

@evidolob: we are encountered an error

when running nightly Che with Theia from master branch on K8S.

[evidolob]

@dmytro-ndp And how it related to this PR?

[dmytro-ndp]

@evidolob: you are right, your PR is not related to the error I showed. I misunderstood the topic and target branch.
Sorry for that.

[che-bot]

E2E Happy path tests of Eclipse Che Single User on K8S (minikube v1.1.1) has failed:

• build details
• "che-server" docker image: maxura/che-server:406
• test artifacts
• https://github.com/orgs/eclipse/teams/eclipse-che-qa please check this report.
  Use command "crw-ci-test" to rerun the test.