[INTERNAL] sap.ui.core: Exclude runTest bundle from JSDoc build
[INTERNAL] sap.ui.core: Exclude runTest bundle from JSDoc build

In the nightly and release builds, the runTest.js bundle is created
before the JSDoc build runs. Without explicitly excluding the bundle
from the JSDoc build, the build failed to extract some information from
the minified code (e.g. the metadataClass), which then caused broken
documentation and broken TypeScript signatures.

Change-Id: Id55454b0a0d9efca347204306dbf011a880f241f

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5