ERROR: failed to run post-scan plugin: consolidate: and False positive on very long lines

### Description
After scanning the Qt code base, scancode failed to run the final steps:

```
PS C:\My\scancode-toolkit-30.0.0> d:\MyScript.ps1
Setup plugins...
Collect file inventory...
Scan files for: info, licenses, copyrights, packages, emails, urls, generated with 30 process(es)...
[--------------------] 0

The following message repeated many times:
c:\my\scancode-toolkit-30.0.0\src\cluecode\copyrights.py:3382: FutureWarning: Possible set difference at position 3
remove_tags = re.compile(

[####################] 29462
ERROR: failed to run post-scan plugin: consolidate:
Traceback (most recent call last):
File "c:\my\scancode-toolkit-30.0.0\src\scancode\cli.py", line 1057, in run_codebase_plugins
plugin.process_codebase(codebase, **kwargs)
File "c:\my\scancode-toolkit-30.0.0\src\summarycode\plugin_consolidate.py", line 159, in process_codebase
consolidations.extend(get_consolidated_packages(codebase))
File "c:\my\scancode-toolkit-30.0.0\src\summarycode\plugin_consolidate.py", line 239, in get_consolidated_packages
for _, holder, _, _ in CopyrightDetector().detect(numbered_lines,
TypeError: cannot unpack non-iterable Detection object

C:\My\scancode-toolkit-30.0.0\lib\site-packages\fingerprints\cleanup.py:54: ICUWarning: Install 'pyicu' for better text transliteration.
text = ascii_text(text)

```

### How To Reproduce

1. Download and extract Qt from https://www.qt.io/download
2. Install Python 3.9
3. Download and extract scancode 30.0.0 to `C:\My\scancode-toolkit-30.0.0`
4. Run scancode once to set it up
5. run `"C:\My\scancode-toolkit-30.0.0\Scripts\scancode" -clpieu --license-score 60 --license-text --license-text-diagnostics --only-findings --strip-root --classify --json D:\SourceCodeLicenses.json --summary --generated --consolidate -n 30 --ignore-author "\.rc$|::|\(User Name\) CString|AppDomainManager|Read\(\)\. DataRecord|^the [A-Z][A-Za-z ]+$|Fred Flintstone\(FST\)|Microsoft Visual|Cortana" --ignore-copyright-holder "Microsoft|BCGSoft|Cortana|Basler.*(Basler|Vision)|Allied Vision|Stemmer" --ignore */BCG/* --ignore */ConfigurationManagement/Certificate.pfx/* --ignore */Salut/* --ignore */doc/* --ignore */tutorials/* --ignore *.acf --ignore *.appxmanifest --ignore *.aux --ignore *.bin --ignore *.bmp --ignore *.config --ignore *.cur --ignore *.dat --ignore *.db --ignore *.def --ignore *.hlsl --ignore *.hlsli --ignore *.ico --ignore *.ifc --ignore *.ilk --ignore *.ipch --ignore *.ism --ignore *.jpg --ignore *.lib --ignore *.manifest --ignore *.mc --ignore *.metagen --ignore *.mp4 --ignore *.nls --ignore *.obj --ignore *.pch --ignore *.pchast --ignore *.pdb --ignore *.pfx --ignore *.png --ignore *.pri --ignore *.resfiles --ignore *.resources --ignore *.rh --ignore *.rsp --ignore *.ruleset --ignore *.snk --ignore *.svd --ignore *.tlb --ignore *.tlh --ignore *.tli --ignore *.tlog --ignore *.ver --ignore *.winmd --ignore *.xbf --ignore *.xdc --ignore *.xsd D:\ExtractedQtPackage\Qt`

Note that scanning other packages (e. g. MKL from Intel) using the same command succeeds.

### System configuration
AMD Ryzen 9 3950X (16 core, 32 thread), 32GB RAM, M.2 SSD 970 EVO Plus 1TB
Windows 10 Enterprise LTSC (1809), Python 3.9, Scancode 30.0.0, downloaded and extracted to C:\My