No Spring Profile results in no configuration being loaded

[jdaugherty]

Issue description

This code was added in Grails 7:

grails-core/grails-bootstrap/src/main/groovy/org/grails/config/NavigableMap.groovy

Line 190 in 7f9a2c0

def activeSpringProfile = System.getProperty(SPRING_PROFILES)

The problem is boot run doesn't always define a spring profile which results in no configuration being loaded.