model_loader; fix error if sample is present twice in analyses order field

Link to #4381
Status Job ID Name Coverage
  Test Tools
passed #691590
test_tools

00:00:08

 
  Test Quality
passed #691591
web
code_quality

00:00:11

 
  Test Unit
passed #691592
web
test_browser_unit

00:00:45

 
  Deploy Review
passed #691593
web
deploy_review

00:00:27

manual #691594
web allowed to fail manual
stop_deploy_review
 
  Test Functional
passed #691597
web
chrome-browser-functional

00:04:03

passed #691595
web
ff32-browser-functional

00:03:49

passed #691596
web
ff45-browser-functional

00:04:51

passed #691598
legacy
old-chrome-browser-functional

00:03:56

 
  Test Functional External
passed #691631
web
chrome-browser-functional-external

00:01:42

passed #691599
web
ff32-browser-functional-external

00:01:57

passed #691600
web
ff45-browser-functional-external

00:02:01

passed #691602
legacy
old-chrome-browser-functional-external-chrome

00:01:54

failed #691601
web
chrome-browser-functional-external

00:01:33